Gigabyte mobo BIOS will not load

Gigabyte Ma785gm-us2h barebones kit - gi...
December 12, 2010 at 09:27:24
Specs: Windows 7
Motherboard = Gigabyte GA-MA785GM-US2H

4 gB OCZ ddr2 ram

I've had this motherboard for a little over a year and everything has been working great until now. I have made no hardware changes nor installed any new software. The only thing I did was take it out of my apartment for my school winter break and brought it back home. Hooked it up on Friday and everything was working fine.
This is what happened: I left it on overnight because I was listening to music, which I have done many times before. When I woke up this morning (Sunday) and tried to get a little WoW action going on, there were a bunch of lines on the screen, almost like what I see when I start the computer up when it is detecting the hardware, but not quite. At the bottom I saw something about the boot file missing. I didn't pay much attention to it so I can't tell you exactly what it said. Restarted it and then I got nothing, only the no signal message on the monitor.
I shut if off, tried switching cables around, made sure the cables were securely attached and nothing. Took the battery out to reset the CMOS and nothing still. I've read about the power supply unit being a possible culprit, and mine is quite old, but have not tried a new one yet.
Anyone have any suggestions before I try the psu?
Regarding the boot file missing, why would it show that after it was working fine the night before and I didn't do anything to it? If it is the power unit, could it have just given out sometime throught the night?

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December 12, 2010 at 10:20:01
"If it is the power unit, could it have just given out sometime throught the night?

You have no idea if it IS the power supply yet, but yes, they can give up the ghost at any time, especially if they're overloaded, overheating or clogged with dust. And if the power supply did fail, it's possible that it took out the motherboard, CPU, or other components along with it. You need to troubleshoot, not blinding replace parts.

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December 13, 2010 at 15:44:01
You're correct in that I don't know if it is the power supply or not. I was simply saying that I had read somewhere that could be a cause.

So I left the computer on for a while and that same screen came back up without me doing anything. I would say it was more than 3 hours before that screen came back on. This time I was able to read the message and it said "BOOTMGR is missing" and then it said to press Ctrl+Alt+Delete to restart. After restarting it that way nothing happens. After a few hours of no activity whatsoever that screen message will come back. Again, I am not saying that it IS the power supply, just that it was possibility. But this message coming back up leads me to think that it is NOT the power supply that is the problem. Of course, I could still be wrong.

Any ideas as to how I can troubleshoot it past this point? I really do appreciate the input.

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December 13, 2010 at 16:13:18
Disconnect the hard drive and any optic drives. Then see if you can get it to boot up into BIOS setup. The fact you do get an eventual display leads me to believe the powersupply is probably OK but your hard drive has failed.

Goin' Fishin' (Some day)

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