Re: Computer won't turn on
Check that the CPU fan is spinning correctly, as well as any other fans.
You said it was making noise, which is almost always a stuck/dusty fan. If your fans aren't working properly, things overheat and then things don't work. What may have happened is that your power supply fan jammed up and the PSU overheated and died. If the CPU fan isn't spinning, that would mean that the system isn't turning on to prevent damage.
Intel Q9400 | Gigabyte EP45-UD3P | G.Skill 2x2GB DDR2 1000 | XFX HD5870
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