PC shuts down after brief few second powerup Pc Shuts Down After A Few Seconds Replying to Trap FeedBacker I was googling similar issues. My machine had the same characteristics and could not figure out what was going on. I replace the power supply about 1 yr ago and was thinking of doing the same thing again. I unplugged everything and took the side panels, brought it outside, used a air compressor to remove all the dust, etc. That took care of the problem. I believe that some lint/fuzz ball was shortcirciuting one of the boards. What an inexpensive fix! -reply by Gerry

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I think its a RAM problem. Somehow the affected motherboard must have fried your RAM and when you put it up in your working system, It must have fried the Mobo.

Anyways Now you have a pair of affected RAM and a pair of disfunctional Mobo

BuffaloHelp is betting on CPU but I think CPUs have a failsafe resister that gets short/burned before the CPU gets the problem. NEways. You cant be sure of anything.

You can buy a Mobo Tester. Its a PCI card which displays error code according to the problem.

That helps in tracking down the problem.

 

 

 

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Pc Shuts Down After A Few Seconds
Pc Shuts Down After A Few Seconds

Not to hijack the thread, but I'm having a very similar problem.

My pc shuts down at different times, more frequently now, a few days later, then it did in the beginning.

The first day this occured (sunday), it would shut down after windows started, while loading startup programs or a few minutes later while browsing the web. It would power up then shut back down moments later a few times before I could use it again without problems. It then worked fine for the rest of the evening.

Happened a handfull of times for the next two days or so, but not regularly. I had a busy week, so I decided to wait and see if it worked itself out, and if not, I would look into the problem over the weekend. It worked only once in safe mode, only once from the last working configuration, and most regularly in normal mode.

Last night (thursday) it crashed 3 times with bluescreens, then ran chkdsk. It got about half way through, and the computer shut off. Then it started again, got all the way through chkdsk, and the computer restarted normally. Howevever, despite my network connection being 'connected', there was no internet, and no icon activity. Resetting the router did nothing, and when I tried to repair the connection, it said something about not being able to.

Now it shuts down before windows even loads, either before bios or right before / during the login screen, at completely different times. Every once in a while (after 10-20 tries) I'm be able to get it to the desktop, but it shuts down right after. Sometimes, the lights will go on and the system will start up, but nothing will happen the monitors will stay off and it will sort of 'freeze.' no shut down, but no noticeable activity. Sometimes the mobo screen comes up, then nothing. Just sits there without shutting down.

I should mention that there's no error beeps, and the shutdown is sudden, always at different times. I'm going to try clearing everything of dust, checking all the connections, rotating my ram sticks, and alternating my power source. I tried booting from my windows disk to run a repair / recovery, but unfortunately all I have is an old XP CD without SP2, so it doesn't recognize my raid. Unfortunately, I can't find the slipstream CD I burned with SP2 integrated.

Does anyone have any insight / possible fix?

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Update
Pc Shuts Down After A Few Seconds

I opened the computer over the weekend and cleared all the dust (only opened my case once in nearly 2 years), and immediately noticed the small fan on the motherboard (asus a8n deluxe sli) wasn't moving and it was hot to the touch. Seeing via google that this was a common problem with a8n mb's, I called asus and they're shipping me out a new one free of charge.

I now have one panel off of the case and a small fan pointed directly at the mb to try and keep it cool. This seemed to help for the next day or two, as it would only shut down once or twice before I was able to use it, a few instances for over an hour.

However, when I turned it on sunday morning, the fans all turned on (except for the defextive northbridge fan) as well as all of the lights and nothing else happened. The monitors never turned on and it just sat there. The next 20-30 times I tried to turn it on within the next 24 hours, it did the same. Runs, but never actually starts.

Could the northbridge fan be causing this problem?

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Had the same problem with the pc shutting down right after power was turned on. I found the problem on this machine was that the power switch had a short in it. So when it was turned on It was almost like holding in the power switch. If I pulled the power switch connector from the board right after the machine is turned on it will stay on.

Hope this helps.

-reply by iGuest

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As most of you, I'm having a very similar problem. Mine consists of my pc shutting down after about exactly 10 minutes it has been on.

I've figured this couldn't be a virus, because I tried simply pressing delete and entering my BIOS setup, and staying there for 10 minutes. It shut down.


I've figured this could hardly be a virus, because I did not even boot windows in the previous test.


I've figured this COULD be RAM but it shows no obvious sign of it, although I'll take care of buying or borrowing a new stick to try it.

What caught my attention here is the short-circuit possibility. I'll have to try with a new powerbar, but other than that how would that be possible?

-reply by Recon

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