Due to lots of testing i haven't been able to respond earlier.
Current status:
Pc tested with the foxconn mb , same errors.
Vga card send to RMA and used a 8600GT card, pc ran Ok.
A new 8800gts had been ordered.
LAst week tuesday i got my pc back. mb used was a new asus p5wdh deluxe.
Note .. my ram (aspeed ddr2-533) seems to be the only ram working on the mb,667 and 800 ram won't let windows install according to my vendor.
It ran ok , till saturday , then i had artifacts in 3d. Sunday after trying to launch a game my pc rebooted.
The minidumpfile showed again the nv4_displ.dll as possible cause.
I am thinking that:
1 my psu can't handle the load
2 or there has to be some issue with the ram and vga?
If it's the psu, which one would be a perfect match for my system?
Do u guys have any idea's hat might be causing this?
N.B. I monitored the vga during this week and it won't run hotter then 64C.