Hey. I've been having a LOT of problems with my PSUs right now. I have 2 HDDs, a new Radeon 9800Pro video card, DVD writer and CD writer. Also, a 15" monitor and an SBLive soundcard. In the last 5 days, 4 PSUs have blown up! The power supply was a no-name Taiwanese 300W unit. I noticed that the blow-up used to occur only when some particularly stressful activity was taking place.. playing NFS:U, running 3DMark2001SE.
I purchased a 400W unit today, and I'm pretty sure that the power line is alright, as a big-screen TV, AC, DVD player and music system are also on the same phase and are not exhibiting any problems. This new unit is working properly so far (fingers crossed!).
What else should I check up? Can the motherboard (Asus A7N8X-X) be causing the problem?