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PC boots but turns off without POST

Q: PC boots but turns off without POST


Radeon 7870
2x2GB Corsair Vengeance DDR3
Antec TruePower 650w

Hey. I was concerned following a random shut down and subsequent inability to boot.I had initially been given an error message in POST after reboot stating that my PC had been shut down by ASUS anti-surge protection and I had assumed it was due to my power supply and/or lack of surge protection (surge protector, UPS).

However, after doing a quick hardware check it seems that my RAM might have a hand in my problems. Initially, when I tried to boot my computer it would turn on, but there would be no display and it would turn off after about 10 seconds without POST/BIOS. After checking my hardware and finding out that the D-RAM LED was flashing red I removed both RAM sticks which allowed me to boot and the conputer stays on however there is still no display.

My temperatures seemed fine and I've tried using both RAM sticks in all 4 DIMM slots and completely without to no avail. I've replaced my older GPU, CPU and motherboard and I'm still having the same problems. Also just bought a new PSU because it seemed to be the most likely culprit but I'm still having the exact same problem.

I'm honestly stumped and would greatly appreciate any advice whatsoever. If I've missed out any info please don't hesitate to ask!

Preferred Solution: PC boots but turns off without POST

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A: PC boots but turns off without POST

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i have a new asus p7p55d motherboard with a I5 760 CPU and well the motherboard light for cpu is on indicating there is something wrong with the cpu and i have no display from my Sapphire 5830 are the two linked or should my motherboard post my H50 was connected properly cuz my paste from my h50 pump is on the cpu now and i can hear the water running through but my mobo light is on should i RMA the cpu or take it to a store any ideas from you guys....

BTW my 2 hard drives vibrate like aeroplanes and my dvd drive opens my red hard drive led on the case stays on doesnt blink and my gpu fan spins my psu spins and my motherboard lights up so is it the cpu i reseated it like three times have no idea what to do

A:PC boots, motherboard CPU led goes red, everything else turns on

Do you have the AUX 12Volt CPU connector from the power supply connected to the motherboard?

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Hi all,
I have a Symbol bar code scanner that plugs in via usb cable. When I push the power button on my pc the scanner turns on, but as soon as windows loads the scanner turns off. If i unplug the scanner and replug it in it works fine. This happens everytime I reboot. Any suggestions????

A:USB device turns off when Windows boots

Hi there,

On some machines, with certain motherboards, the USB ports are sent power immediately when the computer turns on (which yours does), but then Windows will shut that power off when it boots up so that it can load the drivers for all your devices, and then turn back on again. When Windows cuts power to the USB, your scanner shuts down.

Unfortunately there is no way to fix this that is documented. I would recommend trying going into the BIOS menu and enabling "Legacy USB Support" and seeing if that works. (That keeps the power alive to the USB all the time, as long as the PC is plugged in.) If that doesn't work, then there is no solution except for what you are already doing.

Hope this helps.

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I built a computer and it worked fine for months but now it won?t start. I?ve replaced every component but the processor with no luck. (Bought new mobo new ram new psu but no luck) it has a speaker and does not beep on startup. Is this a symptom of a bad processor? I don?t want to buy aNy more parts till I know the problem.

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Today I ran into an issue I can't seem to be able to track down (strictly speaking, it happened once a couple of days ago, but after rebooting it disappeared).

I turn the computer on, and it goes through POST; no problems there, both disks are detected. Then the computer starts Windows (8.1.1) proper, however all I see is the blue Window icon at the top of the screen. At this point the computer just shuts down entirely. I have no idea what's going on; it has been working fine so far. Also, this is a fresh-ish install (1 week old or so), with all drivers installed correctly.

Any ideas what's going on?
I'd rather not have to reinstall the whole OS again.


A:Computer boots to Windows Icon, then turns off.

Can you get a picture of the Screen you are seeing? If it is a big smiley (frown) face, it might be Blue Screening. If that were the case, you may want to jump over to the BSOD forum.

Was the system activated?

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Hi everyone.

This question is regarding my girlfriends laptop. I'm usually pretty decent with computers but I'm at a bit of a loss on this one (I usually removes virus and malware). I was wondering if someone can help me out.

One day my girlfriend shut her computer down and Windows did one of those automatic update. When she turned her computer on again the next day Windows applied the updates and the laptop made it to step 3 and stopped at 98% and stayed that way for hours. Eventually she shut the computer off and when she rebooted it it did a system recovery on startup (before a login screen). She's done this a few times and every time she shuts her computer down it does the updates again even though there is no indication that updates will be installed when she shuts it down. This has happened for a while.

Today the computer was working completely fine and she shut it down and this time the computer didn't update but when she reboot it it went to the system recovery procedure....but it never started. Sorta got stuck in limbo. Naturally, she shut the computer down again but now the computer boots get passed the BIOs and the Windows start-up screen, but now it just goes completely black with just a mouse icon. It's sat here for a few hours now with just a black screen and a point. The pointer occasionally goes into a processing animation but nothing happens. I've tried booting safe mode, nothing. Same thing happens.

I really don't know what the problem is here. ... Read more

A:Laptop Turns on a Boots but Won't Get to Windows/log on Screen

Well, if you don't want to install a fresh OS over the old one, why don't you give system restore a try. Check and see if you still have the restore point that was created, before that troubling update was installed. By default, system restore keeps only 1 or 2% worth of your hard disk space for its restore points, anything pass that, it will delete the older restore points.

System restore should be located in the system recovery options.

If the restore point was deleted, then i suggest you should just install a fresh OS over the old one. Its perfectly safe, just make sure you don't delete the partition. During the installation process, just straight install it over the old one, a screen should pop up saying "The partition you selected might contain older files....etc..etc....you'll be able to access these files in windows.old file"

The windows.old file should be located in you C: drive after you install the fresh OS.

These are probably you're only option.

From your problem, i;m thinking you either installed some updates that weren't compatible with your laptop, or you might of had a firewall that blocked the installation. And windows just didn't know how to handle the situation. That may explain why it was in that repeating updating state and also why that system recovery screen popped up at start up.

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So here's the problem I'm facing from a month, my cpu boots for first time every time i try to start it then it turns off in a few seconds and then when i try to start it again,i press start button and cpu show power , fan works, psu according to me is working fine but the screen remain blank and cpu doesn't boot or **** beep codes

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I have a lenovo laptop its about a year old and it when I turn it on all the boot lights come on then after about 10 secons it turns off nothing boots to the screen. ive tried to boot with just the battery and the same thing happens. The charge lights on the battery show it has a full charge. I would really like some help with this before I have to take it in if its just something simple to fix.

A:Laptop boots all boot lights come on for 10 seconds then turns off

Which model of Lenovo? What is the configuration? Hard drive brand and size, memory, connection?
Has it had any impact while the computer was powered up?
Lenovo laptops are usually among the most reliable, but there are a couple of models that need work.
Try booting to safe mode to see if there is a difference. As soon as you press the <ON> button, press the <F8> key repeatedly once per second. If it works, you will boot to a low resolution screen that is a bit difficult to read. That will tell us a few useful things about what do to next.

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I have tried EVERYTHING from the website, but whenever I push the power button the screen stays black, the power light is on and the f12 key stays red. I have hard reset, bought replacement AC cord, replaced CMOS battery and no help.

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Hi people, hope everyone is well...

I just noticed a strange buzzing noise coming from my computer a few days ago in the middle of the night so I pulled the power cable out and that fixed it, or so I thought.
Now when i start it up, it powers up, goes through post etc, but doesn't even start booting windows, then a sort of like dull click is heard and it turns off. Then when I turn it on again, it asks if I want to boot using last know safe config etc, and using the last known config is the only way I can get it to boot. Works absolutely fine other than that.

This leads me to believe its probably not a hardware problem but I have no idea what it could possible be...

Any Ideas?

Thanks in advance,


A:Computer starts up but then turns off, but boots up as last safe configuration

buzzing noise? Was it a bios beep? Was it an overheating alarm? Is your PSU failing? have you done any hardware diagnostics?

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I have a packard bell easynote laptop with vista and a couple of weeks ago it blue screened saying something about a page fault in non paged area, i turned it off and on again and it comes on and goes to the windows loading screen and loads for a while then turns off. It does the same if i try starting with windows repair or start to last good configuration. I can access my bios. It also wont load in safe mode either!

I have lots of important data on there which i dont want to lose and i dont have a recovery disc either.

Any help would be great


A:Laptop boots up and then after loading screen turns off, desperate for help

How old is the hard drive. If over two years old, you might want to buy a new drive just to preserve the data on an old one, which you can then rescue in a hard drive enclosure on a USB cable.

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It's an oddity.

I have some new computers I'm setting up, and was getting ready to configure wake on lan, to test implementation. You have to usually find something in the BIOS to configure, before configuring it through Windows (if I've rady right).

I can't get into the BIOS, because I have no POST/splash screen from the vendor for hit DEL or F12 or whatever the key is. The computer boots all the way into windows just fine, though.

Where's my BIOS? And how do I get back to it? I don't think I've ever seen a computer (Macs excluded) boot without the option to get into BIOS on boot. I must have missed something...

A:Computer boots without POST?!

Computer make / model?

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Pc seems to be booting but doesnt post anything to the screen. I bought a new ddr3 ram and a used motherboard.
What I tried
-clearing cmos
-removing battery/replacing battery
-plugging to the motherboard and gpu
-checking the sticks one by one on different slots

The psu, cpu, gpu and the monitor are fine because I checked if they worked on my old mobo so it seems like its the motherboard or ram. Any ideas on what else I can do before taking it to the repair shop (trying to avoid that due to covid).

Pc specs :
-q9550 cpu(cooler master hyper tx2)
-gtx 750ti 2gb
-gigabyte ga-g41mt-s2p
- 2x 4gb 1333 mhz ddr3 (cmx8gx3m2a1333c9)
-mx500 ssd
-corsair cx 450

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Hi I am trying to help a nieghbour with a problem, he has a HP Pavilion 403se pc, the M/B is a MICRO-STAR INTERNATIONAL CO., LTD MS-6367, his OS is XP Pro and his problem is he does not get the Bios post at boot up,the PC RUNS PEFECTLY, no other probs. I have had a look inside and can not find a case speaker and no spare connection for one. I have tried to find a manual online but no joy.
Any advice will be appreciated, thanks.....sam stuart

A:pc boots but no bios post


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Hi all.... another perplexing problem..
PC is just over a year old: elite k7vmm mobo, Athlon 1900xp, 256 ddr333, 40gb maxtor, cd-rom, floppy.
It's not exactly overused or abused but the other day it would not 'turn on'..
It POST's no problem but won't display anything to do with windows (xp)..just sits at a blank screen.
So far I have tried:

safe mode
last known good
vga mode
different psu
reset cmos
run memtest
run powermax
different monitor
different video card (mobo has onboard - tried agp, ati rage pro)

All thats left is to run around screaming and drooling unless you can help..

I have noticed the cpu seems to run very hot and fluctuates.. between 55 and 65. I know thats fairly safe but it still seems very hot and unstable. Heatsink doesnt seem clogged and bios reports fan running at over 4000 revs..

So.. any ideas oh great ones?


A:What could this be.. boots, post but no display

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Monitor is on, sound is working but there is no post beep on a new build. I would like to remedy this because in the event of a problem I won't have the beep codes to help diagnose the problem. Thanks for any help. stream

A:No post sound when computer boots up

Make sure the case's speaker hasn't come unplugged from the socket on the MOBO.

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Win7 home edition, boots through the POST then to a blank screen with a blinking cursor.

Have tried the repeair disk, tried to roll back from the last restore point and it won't accept, tried repair boot and nothing. Did the bootrec /fixMBR nada.
cannot get to the option of choosing to boot to safemode <F8> it will not go there.

what else can I try? the puter is still under warranty (dell insperion).

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Let me start off here... XP Pro, 2.8G, 1Gig RAM, 5 year old E-machine which mother board I've replaced since then.

Two days ago my computer wasn't working and gave me a Unmountable STOP Error blue screen. So I fixed that by repairing my Master boot record, but after that I had my computer up and running. So I took this time to defrag my computer, so I left to work while it was defraging when I came back I turned on the monitor to see if it was done(which it should have been by that time several hours later) and found my computer off altogether. So I started checking a few things and when I turned on my computer my monitor would not get a signal and it would give me three POST beeps about 3 seconds long each, but the CPU Fan would come on and my hard drives sounded like they were working and the PSU fan would come on. So I figured it was my CPU that over heated or shorted out, I had in the past never had luck with my mother board. Then I went and got another CPU and replaced it in my computer re hooked everything back up and turned it on it sounded like it was working but again I got one POST beep and then my computer will turn off. And again the monitor would not get a signal for the 5 seconds total its on, after thinking about it I'm thinking that it might be a PSU issue but I will have to wait till I get another one to test it out.

If any one has any suggestions about my perdiciment I would love to hear it, and I'm sorry if I wasn't clea... Read more

A:PC Turns Off after first POST beep

The 3 beeps at post sounds to me like bad memory stick...you might want to check that out next

Raven Master

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I have a ECS DeskNote (desktop/laptop).... anyhow....
It posts fine... and I can go throughout the bios configs... however if i just let it try and boot it will turn its self off shortly after the hardware check screens... (basically it turns off the second it would normally start to look for something to boot off of)

I'm curious if this could be a proccessor problem somehow... or perhapes just a safety feature of the PC to keep itself from blowing up.. (it Beeps once right when it turns off)

A:comp turns off after POST

One beep is the standard OK sign- so, look inside, (if you are still under any warranty, they tell you that opening the case and doing anything can void the warranty...so, ask first, and I suppose you would have if a warranty existed) UNPLUG the computer, open the case, note where monitor plugs in....
look at the video card, unless you have an onboard video chip, remove the screw holding it down, and reseat it- try it a few times, make sure you do not push too hard, motherboards can crack easily. Just be sure the screw holder is flat down on the case and the card is in the slot evenly, retry the computer...
If you have the onboard type of video chip, well, they can go bad....if you have a spare white PCI slot, you can borrow or get a less expensive video card and try and see if that works.
This may or may not your problem.....are there any messages that come up about RAM memory for instance? These can also work loose, so reseat each of them carefully, and handle them only by the edges, true for all of the parts/cards you touch.
Only other thing I can think of, besides the hard drive cables, power cables, etc. is a Network card, which are sometimes the reason for non boot. Do you have one? Sometimes called a LAN card....some newer boards come with an optional LAN card or NIC...Ethernet adapter, same thing.

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A7M266 bios 1.07 512 RAM Win XP Home - Sometime ago my machine started acting up I.E. the screen started falshing and while in Windows the bios screen appeared. My keyboard stopped working. Through the batteries had died. Hit the reset button while replacing the batteries. Now when I boot the screen remains blank until the Windows welcome screen appears. After that the machine seems to function. I get all the beeps/FDD noise. During boot I've tried the "delete" key to access the bios - no go. Tried a floppy with aflash.exe & latest bios drop - no go.
I think I might have a boot virus in the MRD sector of my HDD but that is a guess from a novice.
Anybody heard of this problem?

Thanks for any help

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I posted about this a few months ago, but the problem seemed to have fixed itself so I hoped all was good. Nay, it seems.

I put this PC together over a year ago, it's a dual boot machine (two HDDs) with Win 7 and Linux Mint. A few months ago, I rebooted to switch OSes and...nothing. PC was on but there was no MOBO screen and nothing was loading. After waiting about an hour and fiddling with it some, it booted up normally. It was okay until the other day when I restarted and it would not boot anything up at all.
I cleaned it out, reseated the heat sink/CPU, hooked it back up and nothing. All it would do was turn on and that was it. No POST, no error messages, no BIOS, wouldn't load off disks...
Today, I was just messing with it again (just turning it off and on to see if it might come up) and lo and behold, it loaded everything up. Of course, now I don't want to restart or turn it off again.
What I'm wondering is, would this be a MOBO issue and should I replace it?


RAM: Crucial 2 GB 240 pin DDR3 (2)
Video: XFX HD-435X-ZAH2 Radeon HD 4350 1GB 64-bit DDR2 PCI Express 2.0 x16
PSU: Rosewill RP600V2-S-SL 600W ATX12V v2.01 SLI Ready

A:PC turns on, no POST or motherboard screen

if the bios does not come up,unplug power plugs from the drives and see if the post screens come up

if the post screen comes up

try new data cables on the drives

d/load and run the h/drive makers diagnostic utility on the h/drive


your psu is low quality junk

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I was experiencing HDD related problems lately so I bought a new HDD (SATA II) and installed a clean XP copy. Then as a last try I connected the old HDD and scanned (from Windows not chkdsk at boot time) it by booting from new HDD. But after some time during the disk check, I received a BSOD and computer restarted, ever since then whenever I boot, I get till the point where I should see Microsoft Windows XP screen with blue progress bar, but the monitor blanks at this point & the DISK activity is also stopped (i.e. Disk busy LED remains OFF). I have removed the old HDD and now only the new HDD is present.

Am I seeing death of my MoBo? Or Graphics Card? Or is it my SMPS?
(Plz don't say all of 'em!! )

My H/W is:
Processor: Intel Q6600 quad
Graphics: NVidia GeForce 8500 GT
RAM: 4 GB.
HDD: Seagate 320 GB with SINGLE Partition.
SMPS: standard 500W.

A:Solved: Monitor turns off After Post

Have you tried booting into Safe Mode to see if the problem still exists?

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Well this system I built for someone is now failing for who knows what reason. Here are the specs first off:

AMD Opteron 1.9 GHZ Socket 939
BIOSTAR GeForce 6100-M9 Socket 939 mobo
2GB Corsair XMS PC3200 RAM @ 3-3-3
Onboard Graphics (6100)
Windows XP W/ SP3
Lite-on DVD/RW

Anyways on to the problem. The system, upon restart, did not make it past the Windows XP Splash Screen, about half way loading it it would turn the whole system off. If I went to Safe Mode, things seemed to work. In there I did the usual: ran anti-virus, checked spyware, ran Msconfig and checked hardware manager. After restarting, I managed once to boot into normal windows, in which it turned off after trying to awake the monitor (so it was idle for ~ 10 mins). Subsequent attempts were unsucessful. So I opened the system and checked the following: 1. Checked all cables (none lose) 2. Checked seating of CPU (ok). 3. Tested RAM and Power Supply (meaning I swapped both for different, working models). 4. Cleared CMOS and checked settings (cpu wasnt overheating, correct settings, etc.) Upon clearing the cmos, the monitor stopped turning on, I tried swapping monitors and it didnt work as well. I used different montior cables as well, none successful in turning on the display. I'm running out of solutions as to what the problem is, my guess is the motherboard (hope not).

Summary (as I know this is a long post) :

Things I Tried:
Swapping PSU, RAM
Checked all cables, tried clear CMOS, C... Read more

A:PC turns off after POST, Monitor won't display. Please Look


So I put the board into a new case and re seated the cpu, still won't stay on and still won't display on monitor. Please help me.


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I have a Dell Vostro 3460 purchased several years ago. It shows the exact same issue and behavior as described in http://en.community.dell.com/support-forums/laptop/f/3518/t/20003103.
If the machine starts up, everything is fine. But it takes a reasonable numer of power-cycles until POST comes up. The problems arised several months ago and the effect seemed to increase over time. At first, the machine was occasionally not booting. Currently, it is the other way round. It occasionally boots up only.
At one time beeing lucky and getting the machine through POST I ran the diagnostics with Fn+POWER. No issues found except that it complained about the missing battery, which indeed wasn't installed at this time.
I also tried
- Disconnecting the hard drive -> no change
- Replacing the RAM -> no change
- Removing the RAM -> beep code (as expected)
- pressing D+POWER -> display test runs (I see colors) -> no POST
I would very much appreciate your assistance. Thank you!

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I just built my dad a new computer and I'm having trouble getting it to work.

AMD Athlon II X3 445 3.1GHz CPU
AsRock M3A770DE Motherboard
G.Skill 4GB (2x2gb) Dual Channel DDR 1333 RAM
Seagate 1TB Sata Hard Drive
Lite-On 24x Sata Dvd-Burner

And I'm currently using my Powercolor 1gb PCI-E 2.0 Radeon 4850 video card since the one we ordered didn't arrive yet.

After assembling the computer, I tried turning the computer on but nothing appeared on the display and there was no post beep. I could hear the hard drive and dvd drives spinning, so they appear to be working. The case fan and motherboard fans came on, so the motherboard seems to be powered and the power supply must work.

Afterwards I disconnected both the hard drive and dvd drive and turned the computer back on but it still didn't work. Then I tried removing both ram cards and after I turned the computer on, I heard 3 beeps. beep-beep-beep-pause and this repeated. I then tried each ram card individually and in different slots. But this got me back to where I was having no post beeps.

I put my video card back into my computer to make sure that it was still functioning and that I didn't shock it or anything, and it worked. I put it back into my dad's computer and then took turns trying the dvi and vga ports (both my video card and my monitor have both) but this didn't work either (and no the motherboard doesn't have integrated vide... Read more

A:Solved: New Custom-Built PC. Boots, No Display or POST Beeps

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Hi there,
I've got a bit of an odd problem and am at a total loss...

When I attempt to power up my system, it turns on, then it turns off, then it turns on again and stays on. However, it never POST's. (i.e. Blank screen.) Here's the system specs:

Asus P5K Deluxe Motherboard (Intel P35 chipset)
Intel Q6600 CPU
2GB of RAM
XFX GeForce 8600 GT Fatal1ty
Antec P182 Case

The motherboard, CPU, and memory posted at the store. (The store mounted them for me.) I have no hard drives or CD drives hooked in at the moment. I've tried using a graphics card from another machine that I know works and it doesn't change what happens. I've tried a different PSU. All I can think of is that I somehow screwed up the mobo/CPU/ram when I installed it, or I've hooked something up wrong. Could hooking up a power switch, or a bad power switch on the case cause any of this?

I'd greatly appreciate any thoughts you guys can offer.

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Two weeks ago, I noticed that my monitor remained in stand-by mode during POST, and only turned on at the Win7 login screen. If I restarted the machine, however, the monitor remained active during POST and I could see all the BIOS info as normal.

It was annoying, but it became worse later, when the monitor simply didn't came out of stand-by mode at all. No amount of mouse-sliding or keyboard tapping helped. I opened the machine, pulled out and re-installed the graphics card and the memory, made sure the DVI cable was firmly in place with no bent pins, turned it on again and everything looked normal.

The next day, however, the same thing happened. Yet again, I opened the enclosure and repeated the procedure and, sure enough, it helped once again. Nevertheless, when I turned it on the next day, the monitor remained in stand-by once more.

Re-starting the machine usually works, and the monitor comes to life when the "Go on Safe Mode/Start Windows Normally" dialog comes up (since I obviously restarted Windows when the login screen was up, but unseen)...

That tells me Windows is booting up normally. Also, my Samsung SyncMaster 930b displays its "Analog/Digital" auto-selection dialog boxes so I know it's working (I guess)... so I think that *maybe* it's the graphics card acting up...

The thing is, though, that once it's on, it works flawlessly. Hmm.... although I had to go into the power settings so that the monitor is always on, ... Read more

A:Monitor off during POST, turns on (sometimes) at Win7 login screen

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I'd appreciate some help on this one. I'm a bit stumped as to where to go from here.
I've had my PC for a year. It wouldn't wake up from sleep the other day - just a black screen. So I tried holding the power button. It wouldn't shut off. I had to use the power button on the back of the PSU. Now when I turn on the PC, I get no display, and no POST beeps (made sure the internal speaker was plugged in), but all of the fans work. The drives are spinning up just fine too. I still can't shut it off with the case button no matter how long I hold it in...which seems a little strange.
Tried:Switched the monitor cable from PCIe video card to integrated card. No change.
Tested monitor on laptop using the same cable. Checks out.
Tested the PSU with a DMM. Checks out.
Tested the PSU with a DMM while plugged into MB. Checks out.
*I realize this could still be bad
Breadboarding. No change.
Re-seated the ram. No change.
Removed the only stick of ram I have. No change.
Swapped RAM with the other DIMM slot. No change.
Removed the HDD, DVD, audio, and KB & mouse. No change.
Inspected the motherboard for blown caps. Appears OK.
Removed the battery for ten minutes with the psu unplugged. No change.
Cleared the CMOS with a jumper pins for 10+ seconds...twice. No change.
Examined the heat sink compound and CPU pins. Checks out.

Throughout all of this I never got any beeps or display.

Haven't tried:Using a different ram stick - don't have an extra.
Using a different P... Read more

A:No display when PC turns on. No POST beeps but all fans and drives run

TT mate have you tried a memtest a you only have one stick?? might be as simple as that mate as you seem to have covered most other stuff RAM - Test with Memtest86+

You need to run it for at least 8 passes unless errors start straight away. Try the stick in different slots too- the testing is going to take you a long time unless like I said the errors start to come up fairly quickly.

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Hey everyone, I'm in dire need of some help with my PC. The computer turns on fine, and boots up (can hear the windows start up tune) but I can't see anything on the monitor. Here's the details:

I was playing a computer game on friday, and during that it crashed. I have no idea if this is when things started or not, but I restarted and it was fine.

On sunday I had another crash, only the screen flickered once or twice and there were green pixel lines going from top to bottom of the monitor , about 2 inches apart in a perfect pattern. When I restarted, there were no graphics on the monitor. The light was flashing indicating it was on power saving mode.

I took the computer apart, unplugged everything, and put it all back together, and for whatever reason it worked fine for about 6 hours.

The next day I turned the computer on, and it loaded fine, but shortly after there was the return of the green pixel lines, with the added addition of the top left corner of the screen being filled with green pixelated triangles in a perfect pattern. These were flickering furiosly.

I tried restarting my computer, and again I got no graphics posted to the monitor. However the computer booted up fine, and I heard the start up tune, and 5 minutes later I shut it down by pressing the "Power Off" button on my keyboard.

I tried another monitor and again, got nothing. I then tried taking the computer apart and putting it back together again, only this time it didn'... Read more

A:Graphics card doesn't post any graphics to my monitor, computer boots up fine

Its usually just the graphics cards, they do fail especially if they overheat - then video card fan not speeding up might have been the problem - most are dynamic and should actually speed up under load. Depending on the manufacturer of your 8800GTX you might be able to get it replaced under warranty if they have a 3 year or greater warranty.

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After getting a couple blue screens I am having the following issue:

When I turn my computer on, the fans and drives all start up. After approx. 2 seconds the computer shuts itself off. After another 2 seconds the computer turns itself back on again. This time it stays on but i have no monitor output. I don't hear a beep which tells me it is probably not posting.

I have read a few other threads that have a similar issue but not the same. I am thinking it is either the mobo, GPU, or PSU.

I would like any guidance and assistance that you guys can give me on this specifically what i should look at first and how to diagnose. Thanks. system specs below:

ASUS P5Q Pro ATX Intel Motherboard
Intel Core 2 Duo E8500 3.16GHz LGA 775 65W Dual-Core Processor
EVGA GeForce GTX 260 Core 216 896-P3-1265-AR Video Card
Antec EA650 650W Power Supply
OCZ 2GB (2 x 1GB) 240-Pin DDR2 1066 (PC2 8500) Dual Channel Kit Memory

A:Computer turns on, turns off then turns back on but has no video output

Motherboard Short

I have helped somebody who had a similar issue and it was the motherboard being shorted out by the case. We took the motherboard out of the case and it booted up just fine. Something you might want to try before purchasing new components.

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I have an external DVD CDRW drive that keeps being added then removed added then removed. That is all that it does. You know how Windows XP does. It plays that little two tone sound each time a device is added or removed...it is so annoying. I cannot use the drive as it does not stay "added" long enough. I am stumped...I have never heard anything like it. Have you?

A:External DVD CDRW Drive turns off, turns on, turns off...etc.

Did the unit ship with drivers? ?
It also might be a cable issue. Inspect that cable or try a new one and or another USB port. If you have it on the front of the case try it on a rear USB port. I've seen machines where the front ports carried less power than the rear ones.


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Hi folks!Unfortunately, my 2 year old pushed some buttons on my Lenovo B590 laptop and something isn't right. Upon start up (Windows 7 64), I get a black screen with a moving cursor. Ctrl+alt+del doesn't bring up the task manager.I double checked the boot order in BIOS and that looks OK.Restarting in Safe mode works.I also updated the video drivers, and (strangely) I was able to restart in normal and everything looked fine. However, when I restarted again after that, I was back to the black screen in Normal.I've been Googling all morning, and done what I've found. If anyone else has any other suggestions, I'd be grateful for them. And if you have any questions for me, please don't hesitate to ask.Thanks!

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Computer keeps booting up then flashing a blue screen quickly, and does it over and over again. I let it sit for over an hour and it keeps doing it

A:Computer boots then blue screens then boots again

Hi, let us have the make and model number of the pc and is it a desktop pc or a laptop.

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I'm having trouble with two of my desktops.
Desktop #1 Problem:
When all cords and such are plugged in, I press the power button. The desktop turns on for about 1-2 seconds and then restarts. The bios doesn't flash, the os doesn't boot. As far as I can tell the desktop restarts indefinitely. Any ideas what's going on here?
--Desktop Type: HP Pavilion a705W
I found someone with a similar problem here

Desktop #2 Problem:
I bought some 3M Dust Remover a few days ago. I disconnected power, along with everything else, from a desktop of mine. Pulled the cover off and started blowing the dust out of the case. I put everything back together, plugged it in, and the desktop doesn't work. It boots to a blank screen with the the power and hard drive led's stuck on, on the front of the desktop. The led on the back of the power supply turns on, I can hear the hard drive spin up, it detects the cd/dvd drives, floppy drive and then just hangs with the led's stuck on. Anyone have an idea what might be going on here?
--Desktop Type: Compaq Presario S4200NX

Thanks for the help, I'm hoping to get atleast one of these back online w/o buying a whole new desktop.

A:HELP! Desktop turns on and restarts repeatedly, other turns on to black screen


Desktop 1:

Do you see anything on your screen at all while this is happening?

Have you tried to press the setup key to see if the BIOS will come up and make changes?

Do you have any USB devices (other than keyboard or mouse) hooked up? If so, try disconnecting them and see if it will at least POST or attempt to go into the OS.

WARNING: Before checking the capacitors, disconnect the power cord on your system and press & hold the POWER button to allow the power to discharge! Also, you should always ground yourself before touching computer components to prevent static discharge!

Just FYI, some of the motherboards in this series of HP&#8217;s have issues with the capacitors.

You should take a look at the capacitors to see if the tops of them are raised or discolored. Also, if you put your finger on the top of the capacitors, they should feel as if they are INDENTED and not flush or raised. Raising or discoloration (up to and including a black tar looking substance on the tops indicate a leaking capacitor).

Desktop 2:

Any POST sounds (beeps) produced at all?

Have you tried the monitor from Desktop 1 on this one?

Anything at all displayed on the monitor, to include CHECK CABLE message?

Recommendation: Open the case again and ensure that all the cards, memory, drive cables and so forth are all connect properly and not loose or dislodged.

Do you know how to RESET your BIOS to default using the onboard jumpers?

Here is a detailed link on troubles... Read more

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Hello everybody!
I have a Dell Inspiron 3847 with an i5 4440, 8 gb of ram, and 1 tb of hard drive. I purchased an evga 500 watt PSU and successfully installed it. My pc worked normally and everything was fine. I then purchased an evga 1060 sc and attempted at installing it into my pc. After installing it I started up my pc and it turned on. The fan for the gpu didn?t spin so I turned off my computer, opened the case, unplugged the 6 pin then plugged it back in. I turned on my pc again but it made an odd sound before the power button flashing orange then completely shutting off. Now every time I turn it on the light turns orange and the fans spin for a split second then they stop. Any assistance will be much appreciated...

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Hi Guys,
I am new here - I am quite technical, but I have a bit of a weird one where my HP 8470P laptop fires up, goes past the F1 setup screen and then appears to show another screen (much like the screen that asks if you want to resume startup - not sure what it says) but then turns off.
I initially thought it was a power adaptor or battery as when I connect the battery it begins to fire up then turns off.
I have tried an alternative power adaptor, with the same results.
I'm not quite sure if it could be CMOS or motherboard issue?

Many Thanks in advance.

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product number t6c49ua#aba ive tried everythng i can think of please help me

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My friends computer turns on for 5 seconds and turns off and during that 5 seconds preiod the computer makes a weird noise like beping sound.
His computer is Dell and its XP iam affarid i dont have much of his computers specs. If any one can suggest how he could solve it.

thank you for reading and helping

A:my friends computer turns on for 5 seconds and turns off again automaticly plz help

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Somtimes I turn it on and it stays on for about three seconds then turns off then on for another three seconds somtimes the lights are very dim red and the fan barly spins and most of the time it dosnt even turn on. Will this happend to me about three month ago and one day it just started working normally but now its been broken for a while and I tried to fix the power button I seen that was the problem on some forums but that didn't work I tried alot of things but nothing seems to work and just turned it off one day and it stopped working so i dont know if its the power source but just give me something to try please.

A:My comp turns on for 5seconds and turns off or dosnt turn on at all

Have you tried checking on the fan/ ventilation? i use to have this problem with my P3. fan was jam with debris/ dust. when i boot up, it was fine, once i go in to window it freeze. After i got the fan moving (cleaning the dust) it works fine.

Hope it works for you.

Oh, Zenosincks mght have a point there too. Thought my experience was on the CPU. Cheers,

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Trying to build a system for my brother. I put the 3200+ Athlon XP CPU in and with the heatsink. It turns on for maybe a few seconds and then turns off.

People were saying heatsink but I have tried it on 2, one is the ALK-800A, then some CoolerMaster one. I have to admit the CoolerMaster was originally from my 2100+ setup but still, it's all copper.

I do notice when I remove the CPU, it stays turned on. I know pretty sure this CPU works as I tested like hours before I put it in my brothers. Cant do that now since it was a quite a drive back home from college.

Jumpers? Settings? Anything?

A:ASUS A7N8X-E mobo turns on and turns off in a few seconds?!

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Referring to a Toshiba Tecra 9100, model no: PT910E-602SF-EN

The power button normally doesn?t turn it on at all, though occasionally it boots up normally, starts to load windows, then always cuts out after 5-15 seconds anyway.

It still charges up the batteries fine, but won?t turn on. I?ve checked the ram, hard-drive, and I re-set the bios to defaults - nothing stops it from cutting out if you can get it to turn on.

Any ideas what could be the problem? Any help appreciated, it?s the second time one I?ve had - the same problem last time!


A:Tecra 9100 turns on intermittently, and turns off after 10-15 seconds


Have you already tried cleaning the fan? Maybe a lot of dust is blocking the fan so the notebook can?t start and turns off itself due a higher temperature. It would be worth a try cleaning it.

But in my opinion you have everything done what you can do and it looks like a mainboard malfunction. If cleaning the fan doesn?t help I think the mainboard is defective or something else. If you are familiar with notebook disassembling you can try to repair it yourself with second hand parts. Otherwise it?s time for a new notebook I think?

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I HAVE READ OTHER SIMILAR THREADS ------ My PC actually has the fans / lights AND can't even get anywhere on the BIOS.

4gb ram
7950 GT
3.44 GHz Intel Pentium D
250gb HD
Foxconn P35A (mobo)
My mom took my PC away from me, I got it back and it is retarded now.
I start the PC, the fans come on, lights are all good, then about 2 -10 seconds it shuts off and then comes back on by itself.

When I turn the power on, the monitor does not show anything at all.

I have tried many of different things:

Different PSU ( problem is not the PSU )

D/C the CD ROM / HD ( so it can't be one of those as a failure )

1 stick of RAM ( my memory is fine )

Checked ALL of my cables, they are connected properly ( checked many of times, unconnected, then reconnected alot )

Replaced the grease between heat sink / CPU ( can't be my CPU or overheating problem )

Heat sink / Fan is properly mounted ( not loose at all and is flat )

All of the aluminum capacitors on the mother board are perfectly fine ( not leaking / and are on proper )

Reset the mother board a few times....

well thats MOST of the stuff I have done, there is probably more but I can't think of what else I have tried at the moment.
And BTW, can't access BIOS so don't ask if I can get into it.

Any help would be appreciated.

A:PC turns retarded, shuts off after few seconds, turns back on

Reset the mother board a few times....Click to expand...

Do you mean you have tried resetting the bios jumper, on the Motherboard?
If not do that.

Also, have you tried disconnecting all HDD; Floppy; CD data cables (from the motherboard end (actually I'd do case fan too and front USB connection to motherboard)
If this works, you will need to put one back in at a time, until you find the problem

Usually this fault is related to faulty Ram or CPU

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Hi everyone,

Ive got a few issues with my PC at the moment.

The first issue is that it boots twice before the third attempt which boots windows properly.

Once it does boot it seems to continually display Windows 8.1 Build 9600 on the bottom right screen of the desktop.

My computer also has an issue with the network adapters after it turns on. It doesn't display any adapters and the light where the ethernet cable usually lights up does not light up anymore when plugged in. Also the network adapter's folder is empty.

It is very difficult to find information due to the fact that I cannot acess the internet once my pc has booted due to the issues so finding a solution is difficult and posting specs of my pc is also difficult.

Im just worried maybe it is an issue with the power supply?

A:Boots twice then boots properly on 3rd attempt

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           System type :    M73. System model number.  001YUSOperating system installed.   Win7 64-bitBIOS version.   LENOVO FHKT49AUS, 6/27/2014 Fan turns on (high) and off for no apparent reason. Sometimes for a few seconds other times for a few minutes.

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My computer turns off then pressed again and turns on fine. This maybe due i went cheap and got a psu with case but i believe it needs to warm up for it to turn on.

Thanks for the help!

A:Computer turns off then pressed again and turns on fine?

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