I'm still having problems when the system restarts. Once in a while does the machine die when restarting (never from a cold start). Nothing happens when pressing the power button and I'm forced to clear the bios settings. An old power button hanging out of the case from the rear is saving me a a lot of time. The machine could die on high settings as well as low settings - what's going on? For some resaon does the 1,9 volt mem setting not work at all.

My stable settings:
bios: 5F
CPU x19
NB x13
FSB 200
HT x10
mem x8

mem +0,25
NB +0,1
SB +0
NB vid +0,175
CPU +0,175
ATI4870:17k@3DMark06