Just finished my PC build... had a decent power supply:
Antec EarthWatts 750W Modular PSU - 80plus Certified 9x SATA 4x PCI-E - Ebuyer
After about 30 mins the computer crashed. Just had a blank screen and all the fans went into overdrive. I noticed that clicking noises were coming from the PSU and adjusted the power cord, then it booted up properly only to crash again.
Now, when I turn the machine on, all the fans fire up to full speed but fail to drop down to normal operating level. The LED on the mobo is on and also the disk drive opens and closes. Everytime the screen is just blank, ive tried removing the GFX card and using the onboard graphics video inputs but everytime the same thing happens. I've been told the PSU is likely to be the faulty part, but im not entirely sure as clearly power is getting to everything. It's being sent back next week.
Help anyone?