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What happened to my computer?

Last response: in Components
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August 16, 2009 7:02:20 PM

So last night, I was playing the sims 2, but all of a sudden, while the game was loading, my computer froze with a continious high pitched noise.
The next day in the morning, when I switched on my computer, the PC wouldn't turn into PC mode, if you get the geist of what I am saying. I had to open my computer case to investigate further...
I noticed that all my components were working perfectly well (at least all the ones that remain obvious whether they work or not) but the component fans were stuck in a permanent-boot speed, i.e. very loud. My dvd drive sounded the "booting sound" twice for some reason. I used different RAM sticks and installed then in the 4 different DIMM slots, only to no avail. This omputer has been running fine for 2 years, why did it break down all of a sudden?
I suspect that my motherboard could be the culprit (faulty/failing DIMM slots) or it could be an overloaded Power supply. Please tell me what part of my computer is faulty? Thanks!

Here are my system specs for reference :

-Q6600 Intel CPU 2.4ghz
-650i SLI motherboard gigabyte
-X-fi titanium sound card
-7900gt GFX card
-1x 2GB kingston ram
-Dvd drive
-600W stealthxtreme PSU
-floppy drive
-network card
- 200GB seagate hard drive

More about : happened computer

August 17, 2009 10:49:52 AM

The high pitched squeel is telling you that there is no power from your 6 pin Pci-e connector
to your 7900 Gtx.

This tells you that your power supply as in some way failed.
And it will stop your computer from booting.
Check the 6 pin Pcie connector, Make sure it is plugged in Tight.
If that does not work, I would say your power supply had become faulty.
August 17, 2009 11:03:31 AM

I agree with with above post... may be a stupid question but did u reset cmos?
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August 17, 2009 4:04:37 PM

I don't think it is the graphics card's fault. I removed the graphics card before powering on the system, and the same outcome occured. I even tried using my dad's PSU, same outcome yet again.


Quote:
may be a stupid question but did u reset cmos?


I can't seem to locate the cmos chip on the 650i gigabyte board =/
August 17, 2009 4:17:35 PM

Unplug all the components that you dont need, extra fans, DVD drive, HDD, just leave the CPU, memory and Graphics card connected. See if the squeeling still happens. Try and locate where the squeeling is coming from. Also If possible pop the graphic card from your dads PC into yours.
August 17, 2009 7:41:53 PM

The high pitched noise came from my speakers, it happened about at the same time when my computer started to freeze. I tried usuing my dad's graphics card and it still doesn't work. Although my 7900gt works on his motherboard...
August 18, 2009 10:32:39 AM

Only two things left then.
Cpu has died.
Or the mother board.
August 18, 2009 7:27:09 PM

But if the CPU died, wouldn't the PC not boot at all whatsoever?
!