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Windows 7: Computer gets power, shuts off, gets power, repeats, never boots


28 Nov 2011   #1

Win7 Professional 64
 
 
Computer gets power, shuts off, gets power, repeats, never boots

When I got home from work tonight, my Windows 7 desktop appeared to be asleep, which is normal. I hit the power button to wake, it, walked away, and when I came back, it was not up as I'd have expected.

I looked more closely and something really weird was happening.

The fan would turn on and the power lights would come on. Not sure if I heard the HD (there's an OS C drive, and mirrored data D drives). Three seconds later, it would power off, without anything ever displaying on the monitor, no bios screen, nothing. This would just keep repeating.

I managed to get the CD drive open and put a boot disk in, but the whole sequence happens so fast that it doesn't even recognize the CD or try to boot from it.

Right now I have the computer turned off and unplugged, and hope that this will rectify itself with the passage of time.


My System SpecsSystem Spec
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28 Nov 2011   #2

Windows 7 Professional 64 Bit Service Pack 1
 
 

Quote   Quote: Originally Posted by 450125 View Post
When I got home from work tonight, my Windows 7 desktop appeared to be asleep, which is normal. I hit the power button to wake, it, walked away, and when I came back, it was not up as I'd have expected.

I looked more closely and something really weird was happening.

The fan would turn on and the power lights would come on. Not sure if I heard the HD (there's an OS C drive, and mirrored data D drives). Three seconds later, it would power off, without anything ever displaying on the monitor, no bios screen, nothing. This would just keep repeating.

I managed to get the CD drive open and put a boot disk in, but the whole sequence happens so fast that it doesn't even recognize the CD or try to boot from it.

Right now I have the computer turned off and unplugged, and hope that this will rectify itself with the passage of time.
Have you done any overclocking?
My System SpecsSystem Spec
28 Nov 2011   #3

Windows 7 Pro - 64 bit
 
 

can you press "delete " to get into the bios ?
My System SpecsSystem Spec
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28 Nov 2011   #4

Win7 Professional 64
 
 

Updates.

No overclocking.

Computer does not respond to boot CD or tapping F8 or delete.

When I plugged it in again, as soon as I flipped the power switch in back, it started cycling again, I smelled smoke, and I pulled the cord out. I'm going to a friend who is a computer hardware expert, and holding my breath.
My System SpecsSystem Spec
28 Nov 2011   #5

Windows 7 Professional 64 Bit Service Pack 1
 
 

Sounds like a fried component. My condolences.
My System SpecsSystem Spec
29 Nov 2011   #6

Win7 Professional 64
 
 

I took the computer to a friend who is very hardware-adept - has a home electronics area better-equipped than a lot of repair shops.

He took the computer apart piece by piece, and in the end we're very confident that it's the motherboard. Power supply works when connected to another box, another working power supply displays the same behavior connected to mine. All drives are intact and data and files/folders fine.

So I am ordering a new MB and hope to be up and running once that's put in.

My friend said though that without the same MB (shown in my specs) I'll have problems and need to reload Windows and the programs on my machine. Not a big deal in the grand scheme, but an unwanted hassle when I have my C drive fine, with a configured and works fine version of Windows and my full work environment.

Just wondering, from those who might have been through a similar scenario, what challenges I might face. Again, I will have the same computer, exactly, except for a new motherboard (even retaining the old processor), and I expect to buy the same motherboard I'd had. So from a configuration standpoint, or even a Windows validation standpoint, what issues do I need to be on the lookout for?
My System SpecsSystem Spec
29 Nov 2011   #7

64-bit Windows 8.1 Pro
 
 

You might want to reset the CMOS...
My System SpecsSystem Spec
29 Nov 2011   #8

Win7 Professional 64
 
 

Sorry, my friend probably knows the answer to this, but let me ask - (1) How do I reset the CMOS, and (2) isn't this something on the MB anyway?
My System SpecsSystem Spec
29 Nov 2011   #9

MS Windows 7 Ultimate 64-bit SP1
 
 

When you smelled some smoke, means the MB or something has fried. Resetting the CMOS is not going to help at this time. You can either get your MB checked by a local expert or replace with an exact one (provided you get one ). Or ask the place where you bought the MB (or Computer) for a warranty replacement if within warranty period.
My System SpecsSystem Spec
29 Nov 2011   #10

64-bit Windows 8.1 Pro
 
 

Quote   Quote: Originally Posted by rraod View Post
When you smelled some smoke, means the MB or something has fried. Resetting the CMOS is not going to help at this time.
Arrg ... I missed that part (I need some coffee), and rraod is spot on, resetting the CMOS won't help you at all! I wouldn't even power the machine up until the power (smoking) issue is resolved ... Dont overlook a wonky power supply while you're at it...
My System SpecsSystem Spec
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 Computer gets power, shuts off, gets power, repeats, never boots




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