Re: Dodgy Pc.
My PC did that a few weeks ago I had to get a new PSU, that's prob 90% it, but if its an older computer there's a chance a capacitor on your motherboard blew, check your motherboard info somehow, online or whatnot see if it was made with solid capacitors, if so then you got a dead PSU, or you could check the motherboard yourself, may need a flashlight, just look at the capacitors for any of them being blown, bulging or leaking fluid out the top or bottom.
OS: Windows Vista Ultimate 64-bit
MOBO: ASUS M3N72-D (AM2+ Socket) CPU: AMD Phenom II 965 x4 Memory: 2GBx2 800 DDR2 Ram
HDD: 320GB (298GB) WDC WD3200AAKS SATA HDD2: 1TB WDC WD1001FALS SATA
Video: 8600GT OC Sound: SoundBlaster X-Fi Xtreme Audio PSU: Thermaltake Toughpower 750W