My kt7 ran without any problems the first time with all my hardware installed. My PS is only 200W but it runs fine (duron 600@950 1,8V, geeforce, sb live, scsi, 3xhd). Try solving the problem the old fashion way -> install the cards and drives one at a time and have a look at
[L=]http://www.apushardware.com/faqs/ka7faq/KA7FAQ.html[/L]
GOOD LUCK!