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Windows 7: Computer does not start, LED light on for motherboard...

04 Nov 2012   #1

Windows 7 64-bit, Windows 8.1 64-bit, OSX El Capitan, Windows 10 (VMware)
Computer does not start, LED light on for motherboard...

With Sandy visit in my area, I've lost power couple of times with the computer being on. It had no issues starting it up, other than Windows complaining about not being shut down gracefully.

While I have had power for the last 4-5 days, yesterday the utility power went out with a big boom. I have the generator running and now the computer does not start at all. The LED light is on for the motherboard, indicating that the power is on for the board. Pushing the power on button results in nothing, the system does not start up.

The generator powers the whole house and this computer did work just fine previously when using generator power. The system also had some issues with not maintaining the BIOS settings, as described in a previous thread:

BIOS battery backup issue...

There had been no changes made to the system hardware recently, other than replacing the BIOS battery end of this September.

The LED light goes out in 3-5 seconds, when the PS power switch is shut off and comes on instantly when turned on.

The chances are that either the power supply and/or the motherboard crapped out. Is there a way to positively identify which component is faulty? It does make a difference. If it's the motherboard, I am building a new computer. Conversely, replacing the power supply would save this computer, at least for awhile.

I am planning to get a new power supply today:

Thermaltake SMART Series 850Watt ATX Power Supply SP-850M - Best Buy

It this one doesn't resolve the issue, I'll use it in my soon to build new machine.

I'd appreciate any other suggestion for troubleshooting this issue.

My System SpecsSystem Spec
04 Nov 2012   #2

Windows 8 64-bit (6.2, Build 9200) (9200.win8_rtm.120725-1247)

If the mobo light comes on it possibly isn't the psu. Could be your cpu or another part of the mobo is fried.
My System SpecsSystem Spec
04 Nov 2012   #3

Windows 7 64-bit, Windows 8.1 64-bit, OSX El Capitan, Windows 10 (VMware)

Quote   Quote: Originally Posted by tlarseth View Post
If the mobo light comes on it possibly isn't the psu. Could be your cpu or another part of the mobo is fried.
Provided that turning on the PC turns on the PSU...

Wouldn't the fans kick-in even if the motherboard and/or the CPU fried? There are fans that are directly running from the PSU.
My System SpecsSystem Spec


 Computer does not start, LED light on for motherboard...

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