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T420 Windows 10 Battery or Power Cord problem?

Q: T420 Windows 10 Battery or Power Cord problem?

The battery on T420 was not charged, and I received a DOS message that the battery was extremely low before the system shutdown. I attached the power cord to the system and attempted to start the computer, but received the same message. So, I removed the battery and attempted to start the computer with just the power cord attached. Unfortunately, the computer did not start. I know some systems require a battery inserted even if the power cord is attached. Is this the case with T420? If not, is this a power cord issue, meaning that I have to purchase a new power cord? Is this a power cord or battery issue, or worse, a power supply controller problem? I am not a hardware guy. Any tips or suggestions appreciated. Thanks.

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Preferred Solution: T420 Windows 10 Battery or Power Cord problem?

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ok last year in september i got a laptop, windows vista and whenever i have the power cord in while im using within like 10mins of using it the screen goes blank but the computer stays on. when i run it in safe mode while the cord is plugged in no problems, can anyone help

A:Power cord/ battery problem

Computer make and model?

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My laptop stopped charging about 5 days ago. It has completely drained because of not able to charge. I've had it pulled in for 3 days. The indicator light is orange not the usual white light.It is drained of power so cannot test the battery or access the desktop.Is it the power cord or the battery?

A:Is it the power cord or the battery?

Does it run on the adapter with the battery removed? If so it is not the adapter but the battery. How old is the battery? Have you run the diagnostic test on it either in UEFI diagnostics (F2 as you power on) or in the HP Support Assistant app?

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I went on a trip and when I got home I plugged my computer in and that is the message I got in the Subject above.

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I have a Dell Inspiron 15 5559. Brand new. Purchased from an authorised Dell reseller.
The battery is completely drained and cannot charge. It is plugged in with the power cord and works but the second the power cord comes out the battery dies. When I restart I get ...
Alert! The AC power adapter wattage and type cannot be determined. The battery may not charge. The system will adjust the performance to match the power available.
I have seen other solutions recommending updating the BIOS driver to fix the problem. The catch is TO UPDATE THE BIOS DRIVER I NEED AT LEAST 10% BATTERY POWER which I obviously don't have because I cannot charge the battery.
Can someone please help?


Thank you for writing to Dell Community Forum.
Please boot into BIOS <F2> and check if the adapter / battery is detected and what it is listed as.
Please click my DELL-username and send me a Private Message with the Dell Service Tag number and your email address so that we can check the system configuration.

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I have a Pavilion DV7 that won't powr up. Everything else is fine including the power light on the laptop from mains power.
I think it may be a battery broblem.  Yes?

A:pavilion dv7 won't power up with/without battery or ac cord

If it does not power with the battery removed and AC plugged in then it is either the AC adapter not putting out enough current, the AC power jack module or something worse like the motherboard. 

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Hi ,Since shortly the battery of mine laptop is not charging anymore.Via several topics I followed different procedure to get the battery up and running again, however without any result. Procedures:- Uninstall windows battery driver- Open box- Detach battery connection- Press Power on button for one minute- reboot without battery connections- Power off- attach battery conection- RebootStill not charging - update bios- check battery status --> All ok- But battery still not charging. So probably this will become a guarantee case if anyone hasn't the golden tip Thank you all in advance for the practical tips.   

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hi all, i have an Acer Aspire 5510, the batteries pretty rubbish, only lasts about 40 mins, but if i unplug it for more than about 5 mins and plug it back in to the mains, the light on the adapter goes out and no power gets to the laptop. its seems completely random how long it takes for power to start flowing again (i just try plugging it in now and then).
does anyone have any ideas about it?

A:Tempramental Power Cord on low battery life

can it at least run without the batteries (only AC adapter)?

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If you can answer this, you will have earned my undying admiration. Well, in truth you already have but still.... this is strange.
My brother has a Dell Latitude C600 which recently started giving him the blue screen "memory dump" crash. He had the hard drive replaced because that is what the tech told him it was. Still does it but he just noticed something.

He ran it for over three hours this morning on battery only and it was fine. then he plugged in the power cord and within 15 minutes, it crashed.

He charged the battery and tried the same thing with the same results only quicker to crash once he plugs in the power cord. It seem obvious that something is amiss here but I haven't a clue. I thought the power cord charges the battery which then powers the computer.

Anyway, this is totally unfamilar to me. I have heard of power cords failing to provide a charge but this is a new one. Any thoughts?

Thanks as always to you

A:Laptop crashes on power cord but not battery

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My laptop battery has been dead for some time and have been using the power cord only - has been working fine, but today when switching it on the screen stays blank with the caps lock and number lock lights flashing on and off. Am unable to access menus.

A:Battery dead, using power cord only - screen blank

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Accidentally switched off power cord without battery installed of my HP mini 110 during BIOS flash process, after that, I tried to start the power button, there were no switch on power light, it seems like on the 'dead' status. Your utmost help will be much appreciated.

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Hi guys,
I'm hoping some of you will be able to tell me what is going on with my laptop. Here's what happened- about a month ago (while I was in London for a weekend), I wiped Vista from my Toshiba Satellite M100 (it's about 2.5 years old) and replaced it with Windows7. Everything was great for a couple of days...then I came back to Amsterdam and plugged it in to charge, and realised it wasn't charging at all. I removed the battery completely and tried to turn my laptop on, and it seemed to be a problem with the power cord- it was totally dead. So, I ran to the nearest computer store, bought a new generic power cord, and my laptop was back on track! Or so I thought...

With the new power cord, the battery seemed to register that it was charging, but only briefly each time I plugged it in. As soon as the battery drained (which didn't take long as each attempt to charge it didn't go very far), the laptop would switch off. So, I removed the battery. I have been using my laptop sans battery for a month now, which isn't a huge problem. However, over the last week, my laptop has just completely blacked out a handful of times. The first time it happened, I thought it was because I'd somehow pulled the generic power cord out without noticing. When it happened again, I realised that my laptop really isn't happy, but I have no idea why.

Each time I have started my laptop after a blackout, it seems to be ok. One time, however, it went into... Read more

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I have had my Dell laptop for almost two years now. I replaced the battery before the warranty expired (1 year?). The battery was working fine, but I was starting to have to jerry-rig the angle of the power cord in the socket to charge the battery. I purchased a knock-off AC adapter replacement. I started getting error messages almost immediately when booting up that cord might not be compatible with the laptop. As it was working, I didn't worry about it. The power light start flashing in a particular pattern then, which it has been doing for months (three fast orange flashes and one long white flash). Historically, a white light has meant "charged" and an orange light has meant low power. The AC adapter became increasingly less efficient in charging the battery until it ceased to charge it at all. I purchased the Dell AC adapter recommended for the newest version of my laptop model. There was no noticeable change. (I understand from Dell that the problem may have been that I purchased a 90W adapter, compatible with newer versions of this model, but that I should have purchased a 65W adapter as my laptop is older.) I returned that adapter to Dell and then purchased a re-furbished Dell 65W AC adapter through Amazon. Again, no noticeable change. The battery is taking absolutely no charge from these cords. As I remove the power cord from the socket, the computer instantly shuts down.

When I hover over the battery icon, it says the battery is 0% charged and that ... Read more

A:Dell Inspiron 1545 - Power cord not charging battery

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Hi, the old girl is generally still going. My issue is now that when the x1 is powered up and plugged in it does not permanently recognize that the power cord is plugged in and alternates every second between battery power and cord power. As a result it does not charge sufficiently and runs out of battery at some point. When powered down and plugged in the battery charges over several hours and the laptop can be put back in use. The cord seems fine and the green light on the side of the computer when plugged in does not flicker.. Thanks for your ideas.  

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I have a Toshiba Stallite Pro C850 (PSCBXA-00Q004) Windows 8 64 bit.
The laptop only runs with the AC power cord plugged in, when the cord is removed the laptop turns off completely.
I purhcased a new battery, genuine and expensive. The laptop still does the same thing.
It is recognizing the battery, when I remove it with the power cord plugged in it tells me it is missing.

I have updated BIOS, drivers, ran battery checks and extensively googled and done every suggested action. Which is why I am here, shall I give up?

Appreciate any help at all, thanks!

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Hy!I've used my Thinkpad T420 battery charge mode with custom settings: Start charging when below 95% and Stop charging at 99%. Because the battery effectively has never charged full, it cause sudden capacity decreases (for example from 30% discharging to 7%). I got bored to this and changed to automatically optimize battery lifespan. I noticed that every full charge the "Full charge capacity" value decreases. I have charged it 5 times after this settings, and the remaining capacity looks like this: 57.10Wh, 57.05Wh, 57.00Wh, 56.95Wh, 56.85Wh. Is it normal? Is it possible that this setting will kill my battery? 

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Hi,I have tried two batteries.Checking the Battery  Icon on Thinkpad it  reports 88% ChargingSometimes it fails to boot up then I have to remove battery and press power button while applying the mains adaptor.Any suggestionsThank You 

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OK, I boot up in normal mode, i have my a/c power cord in, 5min later my screen shuts off, but i can still see my power light on and hear humming inside. Its a gateway.

A:A/C Power Cord Problem

Is this a desktop, or a laptop. Model# might help also. It could be as simple as your monitor is set to shut off after 5 min. of idle time???? That you would find in control panel, power options.

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I have a Satellite c660-22v. The power cord became frayed and eventually the brown wire inside the plug snapped off. The adaptor bit is ok. I need a new UK figure of 8 plug. Can I buy them in the shops or will I have to contact Toshiba and see if they still have any?

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when i unplug the power cord from the computer it has a greenish looking liquid on it every time and i took battery out and nothing on it its just coming from the cord area any ideas on whats going on?

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I recently bought a new, 3rd party power cord for my Toshiba Satellite L300 from eBay.
Recently I've noticed that my battery stops charging earlier and earlier. At first it stopped at 87%, then 83%, then 80% all in one week. I've had the computer for about a year which seems a bit early for it to start degrading so fast, so could it be the power cord?

The Toshiba cord says Model: PA-1750-29, Input: 100-240V~ 50-60Hz 1.5A, Output: 19V[solid line above a dotted line]3.95A
The 3rd party cord says Model: PA-34671ACA, Input: 100-240V~1.5A 50/60Hz, Output: 19V[solid over dotted]3.95A

If the new cord is harmful to my battery, I can just solder its input plug onto the Toshiba charger (that's the only bit that was broken) but I'd rather not risk breaking two power cords if I don't need to.


A:Solved: Faulty Power Cord or Faulty Battery

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OKIE DOKIE tx1000z

Ok so I bought a tx1000z the first week it was out which was like almost a year ago. I broke the power cord to it a few weeks ago and just got a new one today. However when I plugged it in the little blue light where u plug it in didn't turn on and it wont turn on either... When I first broke the cord I did attempt to fix it but stripping the wires and connecting them again that way which didn't work so IDK if that did something or what but I need help!!! And I did check the new power cord it is compatible with the laptop

A:HP tx1000z power cord problem

Oh a HP Pavilion tx1000z laptop
The exact last word of your post helped there.

When I first broke the cord I did attempt to fix itClick to expand...

The problem with broken cords, is that you can basically short active to neutral (let alone the safety issue)
This may have caused internal fault to the main board.

Try removing the battery and power adaptor, holding in the ON button for 30secs (to disperse all internal voltage)
Then plug the adaptor (the new one) in only
Then turn it on

If it doesn't turn on
Confirm that you do have the correct power adaptor rating
And then check your hardware warranty on the laptop !

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Hi everyone - I have a Dell Inspiron 1100 laptop WinXP3. Recently my power cord started sparking and then stopped working. I replaced it with a $20 cord found on ebay (new). Everything worked fine for the last 2 months but two days ago the battery started discharging even while plugged in, then Firefox crashed and the laptop shut down. When I turned it on again, it went through a disk check, started FF again and it had wiped out all my settings. I fixed all of those then the discharging started again, same sequence again. The second time the disk checker ran, I got a black screen that said "power supply cord not supported, your computer will run on battery only and not recharge, press F1 to resume or F2 to enter setup".

I resumed because I have no idea what to do in setup The battery started charging just fine and I could even run the computer w/o the battery using the power cord. But every now and then the battery will just start discharging as above and if I shut everything down to just the login screen suddenly it will start charging again.

This is driving me nuts.

Is it because of the cheap power cord I bought? (can't afford a $60 Dell authorized cord) or are there drivers for cords?

Would a System Restore to before this started happening change anything? Why, if the power cord Nazis say "power cord not supported" does it charge up/run fine (most of the time) at ALL?

Anybody have any idea?

Thanks in advance

A:Solved: power supply cord problem?

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I have a Satellite c660-22v. The power cord became frayed and eventually the brown wire inside the plug snapped off. The adaptor bit is ok. I need a new UK figure of 8 plug. Can I buy them in the shops or will I have to contact Toshiba and see if they still have any?

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Hi! I have a YOGA 3 PRO Pro1370 with 194 days of remaining warranty. I love the laptop , but i'm having serious problems with my power cord. In order to charge my laptop I have to hold the power cord in very different positions to start charging. What do I have to do?How can I get a new power cord? Thks!

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I seem to have bad luck with power cords. I went through 3 on my Toshiba laptop. Now my "new" (2 year old) DELL is starting to flicker off and on between AC and battery. Is there a way to find out where the problem is...in the cord or the inner workins of the socket? This problem is getting expenive as replacements cost run between $70 to $100+...
Thanks for any advice you can offer.

A:Solved: Dell power cord adapter problem

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Hey there,

I have a Toshiba Satellite, A215-S5837. About 6 months ago my original adapter had died completely. So I had got a universal one. No problems up until recently. Now I had done some research before asking this question. I had looked up the prior thread located here. http://forums.techguy.org/hardware/548923-toshiba-laptop-power-cord-failure.html
As well as a few other places. The universal charger is not working now. I had my thoughts on the Jack as well however. its a pretty new computer, only about a 1.5 yrs old. Since its a Universal adapter I went and tried the adapter on my girlfriends laptop. Same problem, however when I plug my girlfriends charger into hers it works perfectly fine. No problems what so ever.
Now here is what worries me.

My Jack does get warm sometimes. but the Adapter gets very hot until my laptop is completely charged.
My computer recognizes that it is plugged in however the power light will flash between orange and blue while the battery will be orange regardless if its fully charged. If its fully charged it will be blue but when this happens it changes to orange and the screen dims.

These are the only problems that I have noticed thus far. Any suggestions or thoughts.? Maybe just buy a new charger? Time to replace the Jack and Charger?

Thanks in advance for all the help.


A:Solved: Power Cord Problem Toshiba Satellite

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My Thinkpad T420 turns to a sleeping mode after 1 minute of inactivity on any power plan. It ignores timer settings (sleep after 30 minutes in the Balanced mode and Never sleep in the High performance mode). I hoped that Lenovo Settings software would help resolve the problem but nothing changed after I installed it two days ago. Is there a solution to this?P.S. I have most recent drivers and BIOS installed.

A:Power timer settings do not work on T420 under Windows 8

Am I the only person with such a problem?...

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I have a T420, with a 70++ battery.  I found an SL510 with a 25++ battery in it.  Can these be swapped? Seems like they have the same form factor, but I think the SL510 is an older machine, and don't know if the 25++ can be put in the T420. There does seem to be some discussion of this here, but the the 25++ isn't mentioned. https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T/Replacement-battery-for-ThinkPad-T420/td... 

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I've been having the worst time trying to troubleshoot this problem. What's happening is, whenever I take the AC power cord out my laptop and it switches over to internal battery supply, the screen gets really white and it becomes near impossible to read anything. Once I plug the power cord back in, all is well again and back to normal viewing operations. Please help me fix this.

Dell D610

Intel Pentium M 750 (1.86GHz)
2.00GB RAM
ATI Radeon X300 64MB
60GB Hard Drive, 5400RPM
14.1" SXGA+ (1400x1050) LCD

I know it's a dated laptop but any help is much appreciated.

A:Windows 7 AC power to Battery problem

Im guessing it has to do with the power-saving screen Dim.

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I have an Acer Aspire E15 laptop, I've been using it with Windows 8.1 until I did a clean install of Windows 10 recently. Normally, when I get the warning notice that I have 10% power left, I plug in the power cord and continue work.  But now when I plug the cord in, it turns off the screen (goes black). I still get audio but no video. If I unplug the cord, the screen comes back. What's going on? I've never had this issue with Win 8.1 or any other OS version before.   

A:Plugging in power cord turns off screen in Windows...

Check your power saving settings (Search for Power Options, then change the plan settings) and make sure the 'turn screen off' option isn't set somwhere weird when running on AC. Also make sure the brightness isn't set to zero.

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Having shutdown problem with Lenovo T420 Notebook. Lenovo T420 default come with OEM Windows 7 Pro and we upgrade it to windows 7 Ent After upgrade, join domain, install bitlocker and perform windows update. Normally user sometime won't shutdown their
notebook on 2-3days because they using it on production environment. when try to shutdown windows 7 after 2-3days, it can shutdown windows 7 and LCD screen blank but the notebook power indicator light still on. I need to press the power button for few second
to power off the notebook. Any solution to solve? Called to Lenovo they request me to just get the patch from Microsoft, Lenovo support did not give me what is the patch i need to install. Any one having this experience? Already do the fresh installation of
the windows but the problem still remain on many unit of our T420 Notebook

A:Windows 7 Enterprise on Lenovo T420 Shutdown Issue (can suhutdown system but can not power off notebook)

Have you tried to update the BIOS yet?  If not, that would be a good place to start.  You can also try pulling the battery out while having the laptop plugged in and see if you get the same results.  If so please let us know.

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I have a weird problem here that is giving me some headache since the potential trouble it could cause is great. Here is the problem:
When i remove the power cord of a cpu while working, it often makes windows 7 crashes hard.

1- When that happens, W7 by default makes a system restore. Since we don't want that, we removed this option.
2- Since the sytem restore has been desactivated, W7 reboot over and over again. i have to reinstall. Sometimes, even the safe mode (i think it's the english word) is not working.

This scenario does not happen everytime because sometimes W7 succeeds in "getting back" online. Sadly tough, the first scenario happens often.

I work in a school were the kids have 13-17 years old. Some of them discovered that "Feature" in W7 and they make W7 crashes on purpose and trust me they succeed quite well.

Another concern is that if there is power failure in the school, i'm afraid of what could happens to my W7. Since i have over 100 of them, you can see the reason why i am a little concerned here.

Finally, i asked a technician in another school to remove the power cord of a cpu as a test and it is the same result as me: The computer completely crashed. He had to reinstall.

So my question is this:
Is there a way to make W7 more stable when there is a cold reset? I do not have this problem with XP.

Thank you in advance for your help!

A:Removing the power cord makes Windows 7 crahes hard at the reboot.

Hello Gig, and welcome to sevenforums!

How are you disconnecting the CPU? Do you mean the PSU?

How does Windows make a system restore without power?

Even withut a system restore, windows shouldn't reboot again and again. Are you disabling the system restore feature correctly?

I'm not sure why you would need to reinstall simply for removing power to the computer, this should not happen. You may have to explain more, because I can remove power from my pc any time I want and it boots up just fine. It will display a message to boot into safe mode or continue in normal mode, and I just choose normal mode. I do this with any computer I've ever used.

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Hey guys,My T420 4178lLaptop had gone unused for quite some time (it was at my parents place while I was out of the country), and the battery and power cord were both already struggling I'd left.I'd like to replace both - though the cord kiiiind of works, the battery doesn't at all - and I have no idea how to do this! When I search on the Lenovo product page I get a whole bunch of stuff about 55+ and 70++ batteries that I confess that I don't really understand.Can someone point me in the right direction? I don't want to spend hundreds, but obviously you need to break a few eggs to make an omelette.Thanks!

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My T420 is overheating whenever I have AC plugged in or am on battery. The switch is 91 degrees and fan speed is 7488 RPM. I don't have issues when I take out the battery and use AC power only, but then wireless will be very slow. I recently replaced my battery after my original died. What should I diagnose next?

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Had to up upgrade my power supply on my hp envy 750-116. The new power supply(500b evga) does not have a power cord for the slim laptop like drive. looking for possible fix for the problem

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Sorry I don't know the proper terms, but basically the pin inside the jack where the power cord gets plugged into on my laptop was bent so that it's really hard for me to plug in my power cord and have it stay in place. My warranty with best buy has expired, so I need to figure out how to solve this problem on my own. I can't just leave it like this because the cord comes out really easily and I can't continue to work with such a tenuous setup. Anyway, is this just a matter of replacing the entire unit inside my laptop? I know you probably need more information, but I'm not sure what to provide, so please ask any questions. The laptop is a Toshia M-45, about 3-4 years old. Thanks in advance

A:Bent power supply pin - Hard to plug in power cord

umm.. bend it back so it's closer to normal? That's all I can say about it. usually works for me.

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My g570 laptop is 4 years old, so probably time for a new one...BUT I'd like to get some more life out of this if I could.  Currently I'm running only on battery power. The power button (upper left right above the F1 key) is solid white however when I plug it in...it'll start charging for about 10 seconds and then it stops charging and the power button starts flashing white.  I've tried the shutting down, taking out the battery and pressing the power button and also holding the button to discharge. Still the same outcome. I've also tried turning it on with the battery removed and just the AC power source and it turns out and makes it past the Lenovo splash screen but loses power before getting to the windows loading screen.  Any other suggestions? Or should I just assume the charging circuit on the motherboard has failed and I should rescue my data while I can?

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I have just bought a Dell 19.5 V 90 W power supply adapter for a Dell from ebay. The PSU turned up this morning without a power cord. That's annoying enough but when I looked the connector needed is a type I have never seen before. The centre pin is slightly longer and wider than the other two so I assume that is the Earth pin. The centre pin is also offset between the other two. Again I suppose for connecting only 1 way. The two outer pins have a distance of just under 2 cms between them. Please can anyone tell me what type of connector this is. If I can get some info on it then I may be able to get one.

Thank you Terence


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The system's fan was very loud so I put in a new power supply and then everything booted up fine. Unfortunately, that didn't solve the problem. It was the Motherboard fan making all the noise.

So, I put the old power supply back in and now the system doesn't power up at all. I checked all connections & I replaced the power cord and tried a different electrical outlet.

I even put the new P/S back in and nothing changed. It still doesn't power up. It's dead!

Any suggestions?

A:My Dell Dimension 4550 won't power up. New P/S, power cord, etc. doesn't help.?

gbsdirect said:

It was the Motherboard fan making all the noiseClick to expand...

Do you mean the CPU fan ?
If so then I wonder if the CPU has been cooked

I would start by dispersing all internal voltage.
Detach the power cord
Press the power button in for 20 seconds
Re=attach the power cord
Try again

If it didn't fix then remove all addons, usb devices really anything attached (except screen and keyboard and power cord)
And try again

If it didn't fix then, confirm all internal connections are secure (even detach the dvd drive{s}

If it didn't fix then try disconnecting all fans (what !) for about 10 secs (turning on) I once had a fan of all things, that stopped my computer from turning on (unbelievable, I know)

Lastly, check the CPU for heat damage !

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Power light adjacent to power cord blinks white but laptop does not turn on! What is the solution to get my laptop to turn on?

A:Powerbook 450 G1 - Power light adjacent to power cord blinks...

Hi there, Please follow the instructions mentioned in the following document and check if this helps resolve the issue: http://h20565.www2.hp.com/hpsc/doc/public/display?sp4ts.oid=5405421&docId=emr_na-c03515402&docLocale... Hope this helps!

Although I am an HP Employee, I am speaking for myself and not for HP.Make it easier for other people to find solutions, by marking my answer ?Accept as Solution? if it solves your problem.

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I received the new Power Cord Recall Replacement.. After now using it, my computer freezes everytime I unplug or plug in the power cord. I feel like the recall should have included a new Power Adapter as well, becaues of the damage the power cord has already done, it makes the power adapter fault and danger.. Right? Anyway, does anyone know why this is happening or why HP is only replacing the power cord instead of the whole "power system."Thank you in advance,Kyle Vasquez with ListOrSwap.com

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I ask because I think that's what's behind my computer powering itself off from the main desktop today.
Order of events:

- Go to turn on my computer, sees its not powering on after pressing the button.
- No problem, this has happened before, but not for a few months. Reaches back and pushes the power cable back in/ move the wire a little until I can turn the PC on.
-Pc turns on. Clicks the proper user, desktop appears, nothing unusual.
- Walks away for about 10ish seconds, comes back to see the computer powered off with the monitor saying what it usually does when I manually power down the PC.
- I turn if back on and it's been working for the past hour. Nothing in the event viewer, no mini dumps, Already set to not auto reboot on BSOD.

I just want to first see if the events that happened can possibly/likely be the cause of said power cord before I go any deeper to figure out the cause of the reboot. If there is anything you need to know or which I should check because it probably wasn't the power cord giving my PC the power it needs, please don't hesitate to post.

A:Can a faulty power cord cause a compter to power down at random?

If the desktop computer's power cord was conically loose, an electric spark between the power cord and the power supply, could have eventually damaged the power supply or even the motherboard...

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Emachine with XP Home - was running fine, but in the middle of copying a file got an error "Windows has encountered an error and will shut down."

The machine then refused to boot.

When I plug in the power cable, the PS boots without use of the power switch. No POST, no display, no error beeps. Power seems to be getting to the mobo and hard drive (LED activity), but nothing more.

What on earth could cause this? Where should I start troubleshooting?

Any help would be handsomely rewarded! :giddy:

A:Attaching power cord starts power without switch?

u unplugged the power and still nothing ? u could try clearing the cmos , if u cannot locate the jumper unplug the Power cord , open the side case up and then locate a watch battery remove it count to 30 and then replace the battery and then rehook power and see if it works that way .

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On the power adapter for my new T460 the power cord only goes into the AC brick about 3/8" before it bottoms out.  Another 3/8" of the "skinny" part of the power cord plug is still outside the power brick. As a result, the power cord falls out of the brick at the slightest tug, pull or twist. I'm seriously afraid that one day I'll find I've lost the power cord half of the power supply. Why was the recessed part of the power brick made so shallow?  If the full 3/4" of the power adapter plug was allowed to be inserted into the power brick this problem would not happen. Anyone have a solution, other than buying a 3rd party power supply?

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