Think my mobo died? PS?

[mdaudioguy]

About a week ago, we were having a lot of power disruptions due to storms. Well, one time after the power went out for only a few seconds, I pushed the button to start my main PC and it starts to fire up like normal (even see some of the normal boot routine on the screen), then the screen goes black, flashing "no signal." Powered off and tried again - this time nothing on the screen. The CPU fan starts, I hear a single beep, like it's going to boot, then nothing. This every time now. Sound like the MB is shot? Or perhaps the PS? Not really sure how to troubleshoot either one...

[Lasareath]

Try this:

Yank out the power cord.

While the Power cord is out press and hold in the power button for 20 seconds.

Release and press again for 2 seconds.

Plug it back in and try again.

[mdaudioguy]

Thanks. I'll give that a try this evening. What is the point of it, though?

[Syndil]

Powered off and tried again - this time nothing on the screen. The CPU fan starts, I hear a single beep, like it's going to boot, then nothing. This every time now.

If you hear a single beep the mobo is fine. The problem therefore lies somewhere with the video. Either the graphics card is shot, or your monitor is shot. If you've got a spare one of either, that would be the easiest way to test.

If a different monitor doesn't solve the problem, then it could be your graphics card. And if you graphics is integrated into your mobo, then yes, it does come back to being a bad mobo.

[bansheesho]

Also, I would give resetting the BIOS a shot. Generally you pull all the power and then yank the cmos battery (the watch battery) and move a jumper on the board to clear position (which one depends on your motherboard)... Then try again.

This works sometimes, and its generally one of the steps to try and revive a system that isn't booting. I have had greater success with this if it won't post at all though

The Idea behind yanking the cord and holding the power is to fully discharge all the capacitors... Which I have had some luck with as well..

[mdaudioguy]

Figured I should UPDATE this - Tried ALL of the above advice (thanks guys!), but to no avail...

Thinking it just had to be a bad power supply, I opened up another of my computers and swapped power supplies. The "suspect" PS powered up the other computer fine, while the other computer's PS fired up the "problem" computer just fine!

So, I put everything back where it started and EVERYTHING WORKS PERFECTLY NOW! I'm baffled, but at this point, with everything working, I'm like, why ask why?

Anyhow, appreciate all the advice - I'm sure I'll be back for more down the road!

[cnh]

Good news, maybe it wasn't your mobo but your mojo that you lost?

cnh

[Syndil]

Could have been a loose connector or a loose solder joint somewhere.