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Try to turn on my computer but only the fans work and the power led does not turn on

Q: Try to turn on my computer but only the fans work and the power led does not turn on

I have this issue that when I turn on my computer, the power LED does not turn on but you can hear the fans working properly. I don't the issue and I'm not much of an expert with computers. Please help me solve this issue because I'm completely clueless.

Preferred Solution: Try to turn on my computer but only the fans work and the power led does not turn on

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A: Try to turn on my computer but only the fans work and the power led does not turn on

How old is the computer, what was the last change you made to the computer and when you last shut it down did it shut down correctly?

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I have a bit of a strange issue with my computer. Forgive me if I'm a little too descriptive, but I'm not sure which details are relevant and which are not for such a problem. First, the specs:

Model: eMachines T2984
Operating System: Windows XP Service Pack 2
Processor: Intel Celeron D Processor 340, 2.93 GHZ, 256K L2 Cache, 533 MHZ FSB
Power Supply Unit: Bestec Model: ATX-250-12E REV: P7
Motherboard: I can't tell, but it appears to be an Intel motherboard by the number of Intel labels on it
RAM: 512 MB DDR SD originally, added 1 GB a couple of months ago
Let me know if you need anything else...

Yesterday, I got home from shopping around 1PM, and I tried to start the computer. I pushed the power button, and nothing happened. I checked all of the cords, and they were all plugged in. Not knowing what else to do, I opened up the case to see if there was something obviously wrong. The only thing that I noticed (other than a bunch of dust) was that the power supply unit was still hot. I shut the computer down about 5 hours earlier after about 20 minutes of use, so it seemed strange that the power supply was still hot. I unplugged the computer just in case there was some sort of fire hazard.

At this point, I called a friend who suggested that the problem might be with the motherboard or the power supply unit.

A few hours later, I plugged it back in to try to get it to work. As soon as I plugged it in, the entire unit suddenly started "running" by itsel... Read more

A:Computer Doesn't Turn on, Fans and Some Lights Turn on Automatically

I would suspect that the Power Supply Unit (PSU) is going south. If you have a spare one laying around, install it and see if the problem goes away.
You can buy a new,better PSU from Newegg for about $40.00. I have used a Thermaltake 430 watt in one of my machines for some time now and it works well.
You will have to check the size of your PSU to be sure a new one will fit into the eMachine.
Here's the page with that PSU on it. It's the last one on the list.

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My problem is actually similar to the following:
This thread however had no responses.

I know a little more about my problem and hope it can be solved here.. Sorry for making this post so long, but this problem is a real bugger and I'm giving all the info I can.

The problem: When the computer doesn't start
When I plug in the computer, pressing the power button does nothing. This problem is aggravated in winters (weird but true) and when the D-Link ethernet card is plugged in (whichever slot).

When it does start:
In summers, I leave it powered for sometimes, say 20 min.
Gradually the power light on cabinet starts blinking rapidly (on pressing the power button).. a little later the HDD lights also start blinking. The CPU fan turns in jerks and in sync with these lights. A little later, the computer boots normally and works fine after that.
Also, operating it increases the temperature, and subsequently the computer can be made to start without problems.. till it cools down or I disconnect mains.

How I have to start it when it doesn't:
In winters, the above procedure doesn't work. Then I can try one of two things (I usually avoid turning the comp at all, use my laptop instead, since I don't like either method)
I can point a hairdryer from a safe distance at the motherboard, and keep the power button pressed. It starts in a little while.
OR, this is possibly a worse method..... Read more

A:Computer startup problem: power light flickers, fans turn in jerks

Have you replaced the BIOS battery? after 5 years its is most likely dead or nearly dead by now. Get your multimeter on it and check it's voltage (my money is on this)
Have you tested the CPU fan to see if it spins up OK, test on another PC if you have one?
Have you tried booting up to just the POST with NO drives connected with power?
Tried another PSU? Does this PSU work OK in another PC?

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i just finished building my computer, and it loads into the BIOS fine, and all fans are working EXCEPT the power supply fans! this is driving me mad because ive checked all my connections and i cant find anything wrong. the chassis power plug is plugged into a 4-pin, the cpu fan is plugged into the cpu fan plug on the motherboard, and the 3-pin power supply fan pin is plugged into the pwr fan on the motherboard. (the manual for the case says to plug it into any fan plug on the case). where am i going wrong!?

case: antec 350W cant remember model number
motherboard: asus a8v deluxe

A:Power supply fans won't turn on!!!


only the back fan of the antec power supply is not running. the inside fan is running. is this supposed to happen? it makes me nervous seeing the exhaust fan of the PSU just sitting there frozen. does it only turn on when it needs to...? :suspiciou

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So I have an ASUS P4C800-E motherboard in a system that a built a few years back. It worked fine but the system has been sitting in my basement for a year or two unused.

I decided to take the components and drop them in a new case.

I have hooked everything back up properly (i think) but when I hit the power button, the cpu fan, power supply fan and case fans turn on for a brief second and then shut off. (the green standby light on the motherboard is on)

What do I do?

I think you can tell from my question I am exteremly amatuer at this. Simple explanations please...

A:Turn power on... fans start up then power shuts off in 1 second

With it shutting down after 1sec, I would check that the hsf is plugged in and working. If there is no fan input ie fan speed, most boards shutdown. In addition that the hsf is installed correctly. If it is loose, etc you will have problems. Most of the time when the hsf is loose, it shuts down in about 5~10sec not 1sec. I tend to think it is more of a shorting problem of the board to the case.

If that is not the case, I would attempt to pw ON the system outside of the case. There are complete instructions in a guide at the top of the forum. It is called troubleshooting guide for problem builds.

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I just recieved my new Dell XPS. I have one thing that I would like to change and can't seem to find out how to do it. When I enter standby, the computer shuts down but the cooling fan(s) continue to run. When I bought my Dell 8100 three years ago it was the same way, but the issue was fixed when I upgraded to XP Pro. Now, with the XPS and XP pro the fan(s) continue to run while in standby. There must be a way to control this. Maybe through the bios? Any help would be great.

A:How to turn off power supply fans while in standby?

Look at APM in the BIOS.

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In which of the ACPI power states on a desktop computer are the CPU/PSU fans on?

I guess in S0 all fans are ON. In what of the other states are fans off?
Wikipedia: Advanced Configuration and Power Interface:

? G0 (S0): Working. "Awaymode" is a subset of S0, where monitor is off but background tasks are running.
? G1, Sleeping subdivides into the four states S1 through S4:
o S1: All processor caches are flushed, and the CPU(s) stops executing instructions. Power to the CPU(s) and RAM is maintained; devices that do not indicate they must remain on may be powered down.
o S2: CPU powered off. Dirty cache is flushed to RAM.
o S3: Commonly referred to as Standby, Sleep, or Suspend to RAM (STR). RAM remains powered
o S4: Hibernation or Suspend to Disk. All content of main memory is saved to non-volatile memory such as a hard drive, and is powered down.
? G2 (S5), Soft Off: G2/S5 is almost the same as G3 Mechanical Off, except that the PSU still supplies power, at a minimum, to the power button to allow return to S0. A full reboot is required. No previous content is retained. Other components may remain powered so the computer can "wake" on input from the keyboard, clock, modem, LAN, or USB device.
? G3, Mechanical Off: The computer's power has been totally removed via a mechanical switch (as on the rear of a PSU). The power cord can b... Read more

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I can't turn my computer on. The fans and lights turn on for a second and then turn off. a few seconds later they'll turn back on and then turn back off. I've had this computer for 4+ months now, i built it myself. it recently started doing this but i'd just turn off the PSU (Power Supply Unit) and turn it back on and it woould fix it. now it doesnt fix it anymore. i've re-slotted the RAM (Random Access Memory) and pushed it in firmly, but that hasn't done anything. i've tried different power outlets and pushed everything into the MOBO (Motherboard), i havent messed around with CPU (Processor) because that's just a pain in the a**... i was wondering if there was anything else i could do before having to take it into a local repair shop, lol.

as for my computer specs

CPU (Processor): Fx-6300 AMD
GPU: R9-270x AMD
RAM (Random Access Memory): 8GB Ballistix sport
MOBO (Motherboard): ASRock 970 Extreme3 R2.0
PSU (Power Supply Unit): Corsair X500 w 80+
Case: Rosewill GALAXY


A:Fans turn on, lights blink and then turn off/on repeatedly.

First, I would unplug everything that isn't necessary. Everything external except for the keyboard and monitor. Internally, just leave the CPU, RAM and video card installed. See if it turns on. If not, you might try and test the power button. Disconnect the power button from the mobo. If the pin headers allow for it, use the reset button as the power button. If not, you can use a flat head screwdriver to power on the computer (cross the two pins for the power button with the blade of the screwdriver). If you do this, just be very careful. Touch only the power button pins and nothing else! You could easily damage components by touching the screwdriver to the wrong thing.

Some motherboards have a power button right on the board that you can press to power on the computer. I looked at a pic of your board and didn't notice one.

If that doesn't do it, plug the power button back in. You might try and play around with the RAM. I don't know if you have 2 or 4 sticks of RAM, but try and boot the computer with only one stick of RAM at a time. If there's a bad stick, you'll find it through this process of elimination.

If none of the above works, then it might be a bad PSU.

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Good day!

My cousin asked me to troubleshoot the problem of his desktop. He was telling me that it is not turning on. I was caught by surprise when i turned on the PC when suddenly I heard some kind of explosion. It sounds like a blown capacitor or something to that effect. I immediately unplug the power cord from the wall outlet. I checked all the capacitors and looking for any damage and fortunately it's all ok. I smell the PSU to check if there's any short circuit occured and there was no foul odor or something. I removed the PSU from the casing for and opened it for inspection. I found out that the fuse exploded and broke into 2 pieces. I don't bother to repair it but instead I bought a new 700 watts PSU.

After replacing the PSU I turned on the PC but i found out that the CPU fan will spin for half a second and turn off. Led green light is on but no post or beep sound. I did some troubleshooting and these are as follows:

1. I removed the motherboard from the casing and put it on top of the table with cardboard underneath.
2. Clean the RAM stick and tried on other slot.
3. Clean CPU heatsink and fan since it was clogged by dirt and replace thermal paste.
4. Replaced the CMOS battery and move jumper pin 1-2 to 2-3 for about 2 minutes.
5. I turn on the PC without the video card, hardisk and keyboard.

Motherboard: asus h81m-c
CPU: Intel core I7
RAM: 8gb

Btw, prior to the above steps, right after replacing PSU I just clean the RAM and turn it on but ... Read more

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Tech Support Guy System Info Utility version

OS Version: Microsoft Windows 10 Pro, 64 bit

Processor: AMD ATHLON II X2 CPU 235e 2.7 GHz

RAM: 6 GB , DDR2




Antivirus: Norton 360, Enabled and Updated
No LED Lights. Screen is Black, No Video at all.
When I push the Power Button, it will NOT TURN OFF.



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Jumping into this conversation mainly to see the outcome. I literally have run into the same issue this week with my Lenovo E93z All-in-One. The system was running fine on Sunday. Would not wake from "sleep" mode on Monday. Performed a hard shut-down and attempted to reboot. I can hear the fan and the power light indicator turns on (full green), but nothing beyond that. I moved it to another location for easier trouble-shooting and when I plugged it back in, the power turns on by itself (without pressing the power button), but won't boot. I have limited ability in hardware trouble-shooting, but would replace the power supply if I knew for sure that was the issue.

A:Computer Fans Will Turn on But No POST

Pie2301 said:

I have limited ability in hardware trouble-shooting, but would replace the power supply if I knew for sure that was the issue.Click to expand...

If you are down to just the motherboard and PSU connected to each other and a monitor connected to the motherboard's video output, there is no easy way to tell if the failure is in the motherboard or the PSU without test equipment or swapping a motherboard or PSU.

I have requested a moderator move this to a new thread.

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My computer just recently crashed while I was playing a DVD. It had been running fine for about 1.5 years, except for the occasional BSoD (kernel inpage error) in the past couple of months after I had been playing Wolfenstein Enemy Territory for extended periods of time. This time, however, it wasn't a kernel inpage error, but something else. I didn't catch it, as it flashed pretty quickly. My computer proceeded to reboot, but then it froze. I turned the computer off, and when I tried turning it back on again, nothing happened. No lights, nothing. BUT the CPU fan and the case fans were still running, and the only way I could get these to stop was to unplug the power.

I'm about to go borrow a stick of ram from a friend to see if that's the problem. Does anyone have any other ideas as to what could be wrong? Thanks in advance.

A:Computer won't turn on but fans running

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My computer recently refused to turn on. It had been working perfectly the evening before. I could not smell anything burning or hear anything irregular.

On the advice of Corsair, I bridged a green and black wire on the PSU's 24-pin connector to test whether it was at fault. Upon turning the PSU on with the two wires bridged, the fan began to rotate. So either this is not to blame, or the PSU only partially functions.

I cannot figure out what component is at fault, and replacing parts would be quite an expensive guessing game. The Corsair PSU has a 5 year warranty; however, they require me to mail it to California. Being in Australia, this is quite inconvenient and I would rather fork out for a new one. My motherboard, I assume, is out of warranty.

My specifications are as follows:
Gigabyte P35-DS3P Motherboard
Corsair HX-620 PSU
4xCorsair DDR2 6400C4 (4Gb)
Gigabyte 8800GTS 512Mb (G92)
Antec P182 Tower
Intel E6750 Core2Duo 2.66Ghz
Asus 1814BL 18xDVD+-RW IDE
Western Digital 320G SATAII 7200 rpm HDD(Primary)
Seagate 250Gb SATAII 7200 rpm HDD(Secondary)

I purchased/built it on the 19th of December in 2007

Thank you for any assistance.

A:Computer will not turn on - no fans, lights or anything in between.

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So I built a budget gaming computer one and a half months ago and everything was working fine until 2 days ago. Initially, the computer ran Civ V and Shogun 2 just fine.

AMD X4 760K
MSI A78M-E35 FM2+
EVGA 896-P3-1264-A3 GeForce GTX 260
Kingston HyperX 8GB 240-Pin DDR3
CORSAIR CX series CX500 500W
Windows 7 Pro x64

But 2 days ago, I noticed while I was playing Civ V, the computer would suddenly reset to the bios screen and restart. This happened when I played any graphically demanding game, but not during normal use.

1 day ago, the computer started resetting itself to the bios screen during regular web browsing (no gaming), and when it was idling.

Today, I took the graphics card out and it booted (but I couldn't tell what was going on, because I don't have integrated graphics). I put the graphics card back in and it didn't turn on. I took the graphics card back out, and the computer still won't turn on. Now when I press the power button, the fans turn on and off, but the computer doesn't boot. No beeping.

My guess here is the power supply went bad. But I'm more worried if the motherboard is fried. Is there a way I can test? I don't have another computer (aside from this linux laptop I am on right now), or any spare PC parts. What can I do?


A:Computer won't boot at all (fans turn on and off)

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Hey all I'm new to this forum but I've built a few computers in the past but have never experienced any problems like this.

Case: Powerspec Cooler master case
Processor: Intel i5 750(quad core)
Motherboard: Gigabyte H55M-UD2H
Powersupply:OCZ 500 watt Mod X Stream-Pro

Here are some pictures of my build and a video of what is going on.

Video: youtube.com/watch?v=UbuFZJQnlds

As you can see the PSU, CPU, and Case fans are turning on and the Motherboard LED lights are blinking and then they quickly turn off. I dont think its a problem with the Power Supply because I have already returned one with the same issue thinking it was defective.


wont let me post pictures =/

Any help is appreciated, thanks for your time!

A:CPU and PSU fans turn on but then quickly turn off as does everything else

Does your current BIOS version support your CPU?

Your 4 pin power connector looks to be missing.... Top right of the video 8secs in.

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A few months ago i built a system through a popular computer company, ibuypower, and was initially pleased with the performance of my PC. I was then forced to take a few months away from the system due to work, during which it was stored in a safe dry location. Upon returning the system had the issue stated in the title. I have replaced the power supply with a far better one (went from 450w to a 700w) and the same issue peristed with the new power supply, which works with the tester it was shipped with. I've read about it possibly being the Ram, so i have ordered a 16gb ddr3 ram upgrade (2x - 8gb sticks) and they should be here within a week. I also read that it may be the CMOS battery but those are unable to be shipped through the mail so im having trouble tracking those down here in Japan. If somone could help me figure this out i would greatly appreciate it. I've cleaned and tested everything i can and i can't find an issue other than it physically wont function. Also, in case anyone was wondering this thread was written from my laptop, not the PC.

Much Apreciated

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I'm definitely not an expert but I have general knowlege from building a couple systems. My current system is the following (I apologize if some details are left out, I'm currently at work)

OS: Windows XP
Chip: Intel P4
MB: Asus P4P800 (865 PE)
RAM: I forget - 2 sticks of Kingston = 1gb
Video: Nvidia 5600 AGP (running 2 monitors)
PSU: Generic from Fry's 400w

I was listening to some streaming music and left the room for a couple minutes and came back my computer had shut down. When I got closer I could hear the system trying to boot, the fans would spin but it would shut down every 2-3 seconds. I switched the power off from the PSU.

I bought a replacement 500w PSU from Fry's figuring it went bad. I installed the new PSU but the system would not boot. THe fans would come on and a light on the MB was on but nothing. My monitors weren't receiving a signal either.

I then thought maybe it was the video card and went and bought a Nvidia 6800 AGP but still nothing.

I read online and tried a few other things:
- Removed the onboard battery on the MB and reseting the CMOS using jumpers
- Removed all PCI components including video card and tried booting and then installing only the video card and rebooting.
- Removed one stick of RAM
- Removed hard drives

At this point I think it might be the MB or just another bad power supply. Any other suggestions?

Thanks in advance.

A:Old Computer: Fans turn on but system won't boot

Remove the CPU heatsink/fan and check for thermal past. Clean of the old paste and apply new

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Please Help me with this,
One day I get home, turn on my computer, it comes on... checking email...alls fine, then my computer just turns off... click the on button...loading... screen comes up...bam....off again! Not even any error messages! I continued like this for about 10-15 minutes untill now I only get it up for about .7 seconds and nothing appears on the screen.

1. I have the power supply, fine.
2. I have checked all peripherals, fine.
3. I have checked the video card and RAM on different computers, fine.
4. I have continually cried, fin... never mind...
5. I checked the Hard drives, mointor, all other drives, FINE!

My system specs are as follows:
| AMD Athlon 64 3200+ |)
| Gigabyte GA K8NS |)
| Apollo Geforce FX5500 256MB DDR |)
| 3 x Corsair 256GB DDRAM |)
| Western Digital 250GB ATA IDE HDD |)

Thanks in forward for any help or ideas, but one thing that I could use is howto test to see if you motherboard is damage.

Thanks even more!

A:PLEASE HELP, computer won't turn on, fans come on and lights blink

Have you checked that your fans are spinning up? Is the heatsink sitting flush with the CPU? Have you made any changes to your hardware on the mobo?

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When I Exit Speedfan,my Cpu And Hd Fans Just Go On At Highspeeds And Dont Go Off Until I Go Bak To Speed Fan And Turn It Down Manually.....how Do I Just Get Rid Of Speedfan And Make My Computer How It Used To Be?

A:Solved: Everytime I Turn Off Speed Fan,my Computer Runs The Fans At 100%,how Do I Fix This?

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Hi to all Eight forum.
I m here with a strange problem, it happens from yesterday, the problem is when I playing games on my Dell inspiron N4050 and then the main power where the charger pluged in is turn off (it is the most problem in my country that there is heavy short fall of power), the laptop is remain ON just for 2 or 3 seconds and then its suddenly OFF. its not happening before, why is that,? why is the laptop didn't get power from the battery.?
when not playing games. and the main power (electricity) is gone, then this problem is not occurred.
plz understand my problem and reply me.
sorry for my bad English.

A:Laptop suddenly turn off when main power turn off.

Could it be overheating protection?

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Hello Microsoft team,
We need for an application to unplug and replug usb3 - not physically but with a program.
We checked a lot on the internet but did not find answer how to do it in windows 8.1 pro (in c++).
We know that hibernation creates something alike, but how can we only turn down the power of usb3 and return the power back on back via program (in c++).
Thank you for your help.

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i built my computer 3 weeks ago and has been working great. Recently i burned a cd in nero, and restarted and it wouldn;t come on. Only the fans and leds worked. The fan on my graphics card was really loud like it was working at full speed when its normally quiet. After a while playing around and nothing working, i just randomly turned it on and it did! But today it did the same thing and I can't figure it out. I went out thinking maybe it was the power supply and took my mobo out and the new power supply didn't make it work. I'm thinking its either the motherboard of graphic card. Which one is more probable?

My specs: gigabyte ds3 mother board, evga 8800gts 320, g.skill 2 gigs ddr2 ram, intel conroe 6750, and an eneremax powersupply. Please help!!

A:Computer will not power on (fans work)


Not totally sure what you did "I went out thinking maybe it was the power supply and took my mobo out and the new power supply didn't make it work.", but it does seem like you tried a new PS.

Disconnect everything except the CPU/HS/fan, RAM(one stick at a time if you have two) and video card. If it doesn't change things you will have to try other different components like the video card, RAM etc.

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I bought my yoga 900 about 3 years ago from best buy, the power button stopped working about a year ago. About 6 months ago, every once in a while my laptop will have a black screen although the power button is lit. The tiny pin-needle button doesn't make it turn on either when this happens. Every time it happens, I have to wait for it to die and then it will turn on.Please help,Jessi

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I even tried setting the idle time to only 1 minute but none of my 4x hard drives will turn off when idling. Search indexer is turned off. System setup: i7 920, Asus P6T Deluxe, AHCI enabled with the latest intel drivers.

I didn't have this problem with this system when using XP before.

Any ideas?


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Last night my computer blue screened about 3 times then it just stopped turning on altogether. Wheni plug the power supply into the motherboard the neon fan turns on for a milisecond but that seems to be the only way that i can tell that there's power going to the motherboard.

I've tried 4 different power supplies, different processor, different BIOS batteries, different RAM, etc, but no matter how many times i try to turn it on it just wont turn on.

I do recall doing something innthe BIOS last night which seemed to start this dilemer. I went into power management and did something to the power switch option, then set everything back to default settings.

This is when things started to happen then my pc just wouldn't turn on at all.

It's a socket939 MSI CoreCell.

Could something i did in the BIOS really be causing this problem and is there a way to fix it?

Like i said there does seem to be power going to the motherboard but it simply wont turn on (i even tried different power switches just in [email protected]

Any help would be greatly appreciated. I just don't want to buy another 939 motherboard as most shops don't cell them any more and it means i'd have to buy a new processor too.

A:Computer wont turn on with power switch but there is power going through it?

If it is a BIOS setting, removing the CMOS battery for a few minutes should clear it. Since you've already changed the battery more than once, it would seem that is not the problem. Considering what you already tried, it might be the motherboard itself or possibly the graphics card but my money is on the motherboard. Just to be sure do you have another graphics card to test with?

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I recently upgraded Windows 7 to Windows 10. When I power down the system from the menu, my computer does not completely turn off. The procedure I use is described below:

Click Windows_Start_button > Power > Shutdown

The system closes applications and appears to initiate a shutdown procedure. Everything appears to be shut off, but my mouse is still lit up. I do notice that the fan stops and everything else appears to be completely shut down. When I was running Windows 7 before my upgrade, my system completely powered down.

I have a dual boot system with Linux, and when I power down from Linux, the shutdown is complete, so I don't think I accidentally did anything to the hardware or BIOS.

Has anyone else experienced this? I'm pretty sure there is some tweak in Windows 10 that would fix this, but I haven't found it yet. Thanks for any suggestions you might be able to offer.

A:Power down button does not completely turn computer power off

I found the solution on another thread. If you have this problem try the following:
1. Log in as an administrator.
2. Right click the Menu button.
3. Left click -> Control Panel > Power Options > Choose what the power button does > Change settings that are currently unavailable
4. Uncheck the box next to Turn on fast startup (recommended)
5. Make sure Hibernate is unchecked.
6. Left click Save changes.
The next time you shut down the computer, it will be completely powered off. At least this worked on my machine.

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have a HP dc5000 SFF
with windows XP Professional

When I push button to turn on, the green light comes on, then blicks green and a beeping starts, any ideas?

A:computer has power, won't turn on

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I thought the power supply unit to my emachine T1840 was shot when the cpu would not turn on, so I replaced it with a new one, and it was still dead. What next?

A:Computer will not turn on, no power

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I just put together my first computer 6 months ago. It abruply shutdow in the middle of writing a paper for school. I couldn't turn it back on right away. after trying a few times, it turned on. All the fans are working even the fan on the power supply, the motherboards lights are on. My graphic card in on the motherboard. I think it might be my power supply because when I first put it together I didn't plug in the smaller power connection to the motherboard and the same thing is happening, black screen. It's like my computer isn't giving my monitor any feed. I will have more info when I get home. I can't get in to bios or safe mode.

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Something wierd going on, I can shut my windows XP down like normal, and I get all the way thru the shut down screens, the LCD screen goes blank, the keyboard lights go off, but the power supply in the computer remains on, powering the fans and lighting up my front panel fan control Assy. In order to turn off the power supply, I need to switch the switch on the back of the computer (power supply switch). Then, to turn if back on, I need to turn on my Power Supply switch, and open the case, and lightly touch/push the area near the CMOS battery, and without even touching the front panel power switch, the computer comes to life and I am able to load Windows XP and go about my bidness as normal! I SUSPECT this was caused from a lightning storm a few nights ago, it wasn't near me, but it caused the power to go out and come back on rapidly like three times. What gives? Power supply, Motherboard?

A:I cannot turn my computer's power supply off!

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I was sitting at home enjoying myself one day and then I suddenly hear a thunderstorm outside. First the monitor flashes and seconds later everything in my room turns off and back on immediately, everything except my computer. The monitor and everything was working perfectly but the computer itself was showing no signs of power at all, no blinking lights/LEDs on the front, Back, inside the case, no fans spinning, no beeps, no nothing. I tried taking my PSU out to test it with the paper clip trick, but my DVD/CD Drive is preventing me from taking out the cords. What do I do?

A:Computer won't turn on after Power Outage

Hi Jkillaz98, Welcome to Sevenforums

Check if the PSU fan is moving at all or not, if not try to install a spare PSU (which is working) and check if motherboard is getting power or not. You can remove your DVD/CD drive and then take out the PSU.

If the PSU is failing, you can always buy a new one. But, (may god forbids) your motherboard is fried......you can get that repaired as well...not to worry. But, first we need to find out what is causing the issue.

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Okay, so.

I know everyone has heard this scenario, and I have done a good amount of time on google searching for an answer, and have yet to come across something that helped.

What happened:

Overnight on Tuesday we had a pretty wicked thunderstorm which knocked our power out when I was sleeping (clocks reset, etc gave it away). When I woke up, my computer was off. No problem, I thought, that is normal. I go over to boot it up.. nothing. No LED lights, no fan spin, no beeps, no NOTHING.

What I've done:

I have unplugged and switched off my computer and left it all day, came back after work, plugged it in, still nothing. I have tried a different outlet, still nothing. I have flashed the bios for fun, still nothing. I've checked and rechecked all of the cables (which shouldn't be necessary, the computer didn't move), and they all are correct and in place (I've reseated them too).

Now, I know what you are all going to say : "Do you have a surge protector?" Yes. Yes I do. I think it just failed or something.

Also, I know you will tell me that my power supply is most likely fried, and in all honesty, you are probably right. I don't own a tester, so I will probably have to run to Best Buy or something with just my power supply to have the Geek Squad test it for me.

What am I looking for? Any. Other. Possible. Solution.

As I said, I am going to test my power supply when I get time, and no, I do not have a spare one lying around/other PC to test it with.

Thanks fo... Read more

A:Power Outage.. now computer won't turn on

How did you flash the bios if it won't turn on?

Some surge protectors only work a limited number of times (I don't know why, I've just seen some that say it on the packaging/protector itself).

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Hi guys.

I'm having an issue where the computer will not shut down unless I turn it off at the PSU/power supply (I've had the issue for about a month now).

Windows 7 will run through its normal shut down procedures, then the screen goes black, but nothing happens apart from the fans going really loud for a few seconds before they quiet down and nothing else happens.

The computer restarts fine, but does not shut down at the power button.

I suspect a faulty motherboard (Asus M2N68-CM - pretty old now), or maybe a service/process is not finishing after shut down.

Would greatly appreciate some expert knowledge on this one!


A:Computer will not shut down/turn off power

Could you do a shutdown trace by following this article: Gathering a Startup, Shutdown, Sleep, Hibernate, or Reboot Trace

Please download the latest Windows 8 SDK here, it works flawlessly with Windows 7: Windows Software Development Kit (SDK) for Windows 8

Once you run the setup, choose the install location, hit next and select ONLY "Windows Performance Toolkit" and click install. After this, you HAVE to restart the system, then follow the given tutorial.

This can help forum members and even me (I'm not much of an expert in analyzing these results ) identify if anything is stuck during shutdown.


There might be faulty driver or some bad setting in the BIOS. Try resetting the BIOS to the defaults.

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Hello friends,

My old computer (Intel Impression 440BX) was running Win98, I formatted and installed XP Professional. Now when I select shutdown, the computer no longer turns itself off - as it used to. I now get the "It is now safe to turn off your computer" screen and have to manually turn off the power to the Motherboard.

I didn't make any changes to BIOS (AWARD) and I looked around to see if XP changed something, but didn't notice anything. I am not that experienced with all the different BIOS settings.

Thanks for your help.

A:XP Doesn't turn power off my computer

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I have a Emachines T2958 and one day the circuit breaker at my house flipped and the power went out. About 5 hours later when i tried to start it up about 20 seconds injto the boot after the windows logo it would restart itself and just keep doing that repeating the process until i would turn it off. Can someone plz help me fix this?

My comp has
512mb Ram
64mb integrated nividia graphics
2.66 Ghz processor
Intel Celeuron Processer

Someone plz help.

A:Computer won't turn on after power outtage

Which came first, the chicken or the Emachines....?

Well...you didn't exactly say if the box blew the breaker or vice-versa. You might try resetting the CMOS. Hang loose, wait for a another opinion

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Can someone please help me. Take in mind my computer skills are just average. This isn't a problem yet, but would like to get a fix before if possible. Here it is. This laptop is only 5 to 6 months old. Windows 8. My power button that turn,s the computer on, sticks some. I have no money to take it to a shop, I was wondering if there,s a trick to fix it? Or another way to turn it on? Thanks, Chuck

A:to turn computer on ( power button )

Is your computer new and still in warranty? if the power button sticks there may be a known issue with the casing. Have you tried to reach out to the manufacture to see if there is a known issue?

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It either shuts down or it doesn't!

What is it you mean here? XP is somehow restarting? There is still power to the motherboard?


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Hi all,

I went to work this morning at 8am and my desktop computer was on.

When I came home, the computer was off. When I press the on button, nothing happens.

I called the electric company and found out there was an outage in my area from 9:44 to 9:47.

They advised me to turn off all the breakers and then turn them back on after a couple of minutes.

But, the computer still will not turn on.

Any ideas on what to do? :/

Thank you in advance!

A:Computer Does Not Turn On - Power Outage

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Hi there, I just got this problem 4 days ago.
While I was working the elecricity went down in my neighborhood. At that time my computer was on (downloading movies). When I get back I waited a bit until the electricity's back, then when its back I tried to turn on my computer, but it did not work.
I checked the power cable if it loose, or checking the power bar if its malfunctioning, bit everything was fine. Since other electronics that's connected with my power bar worked properly except my computer.

So I open my computer and looked inside. I did not smell any burn which I'm afraid. Reattaching cable, try to turned it on again, not working. Then i see there's a switch
at the back of my computer, and I tried to pressed it and I noticed a small lights near the motherboard turned green. Then I turn on my computer again, still no power. Then I pressed the switch again at the back and the lights went off.

After thinking a while I concluded that it is the power supply problem. So since i have a warantee from X company I just brought it to their store and see what they could do.

3 days later I'm kinda pissed off because they did not call me since I'm thinking it's just a matter of replacing power supply. If i Have one or it's free I wouldnt have brought my computer there since I could just replace it by myself. So I came back to the store asking about my computer's status.

To my surprise they said the power supply it's fine, it&#... Read more

A:Computer can not turn on after power outage, causes?

light86 said:

Hi there, I just got this problem 4 days ago.
While I was working the elecricity went down in my neighborhood. At that time my computer was on (downloading movies). When I get back I waited a bit until the electricity's back, then when its back I tried to turn on my computer, but it did not work.
I checked the power cable if it loose, or checking the power bar if its malfunctioning, bit everything was fine. Since other electronics that's connected with my power bar worked properly except my computer.

So I open my computer and looked inside. I did not smell any burn which I'm afraid. Reattaching cable, try to turned it on again, not working. Then i see there's a switch
at the back of my computer, and I tried to pressed it and I noticed a small lights near the motherboard turned green. Then I turn on my computer again, still no power. Then I pressed the switch again at the back and the lights went off.

After thinking a while I concluded that it is the power supply problem. So since i have a warantee from X company I just brought it to their store and see what they could do.

3 days later I'm kinda pissed off because they did not call me since I'm thinking it's just a matter of replacing power supply. If i Have one or it's free I wouldnt have brought my computer there since I could just replace it by myself. So I came back to the store asking about my computer's status.

To my surprise they said the power suppl... Read more

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I replaced power supply unit, motherboard and hard drive. My computer still won't do anything after power surge. The green power supply light stays solid green, but nothing else comes on at all.

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Is there a way to have a computer turn on immediately once power is reaching the computer without having to press the chassis power button (ie. I turn on a power strip and the computer immediately begins booting)?



A:Turn On Computer Without the Power Button

The setting is usually in the BIOS.
It's common with servers.

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I wasn't doing anything out of the ordinary, merely playing a game on my computer, when snap, the screen goes black and looses signal and the computer starts rebooting. It seemed to start rebooting normally, but i regret to say i stopped paying attention to the computer, and 30ish seconds later i hear it completely power off.

When i went to turn it back on, i got a flash of the blue case lights and all the fans twitched but it immediately powered off again. This now happens every time i try to turn it on. After getting the power flicker, i have to either unplug the computer or hold the power button for a few seconds in order for the computer to flicker again when pushing the power button. It's literally less than a tenth of a second worth of power before it shuts off, the fans just bounce back to thier same location. The green light on the mobo is always on while power is connected.

I've unplugged the hard drive and both cd drives, reseated both ram sticks, unplugged and replugged all the power cords to the mobo (A8N SLI).

Any ideas on what can cause this type of behavior is greatly appreciated.

A:Computer won't turn on. Only a power flicker

Hello and welcome to Techspot.

Sounds like your psu might have failed.

Try another psu and see if that helps.

Regards Howard :wave: :wave:

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My son's computer wouldn't shut down, it would close down the OS but the computer lights and HD would still be running. I did a scan, Ccleaner with its registry fix, and degfrag.. that made it work maybe twice. Now it is doing it again.
It refuses to turn off even with the power button (it shuts off then starts again, on its own - I am NOT pressing the "restart"). I have to unplug it from the wall to make it stop re-starting itself.
Any ideas?


A:Computer won't turn off, even with power button.

What Operating System your son's computer is? Is it Windows XP or Windows Vista?

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As the title says. It's a new gaming PC and nothing works like it was yesterday. It worked for like 4 boots. Now it wont connect to anything(my monitor, keyboard and mouse) and the fans go like double the speed

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Hello, I have put a new motherboard, power supply, and processor into a computer. The first time I turned it on with all peripherals plugged in, the fans stayed at max speed and it eventually shut down. I unplugged all peripherals except for the DVD drive, and then replaced the power supplie again and and the cpu has a temp of about 124 and the fans still stay at max speed, has not turned off yet.

Any Ideas??

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I have to hold in the off switch to get it to shut off. Is this a CPU or Motherboard pblm. and how would I determine which it is ?

A:when I turn on puter fans run but nothing happens.

Hi relee_1, welcome to TSG.

It could be a variety of things......can you give us some history on the problem? Is this a new machine? Did this just start happening out of the blue.......have you been inside the case playing around with anything?

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