I used memtest86+. It took 1/2 hour to complete the test, but it reported no errors.
When I entered the configuration of the tool, the computer hangs.
The tool checked without ECC, but this memory supports ECC. I wanted to test ECC too.
As I am on my work now, I cannot check the voltages as mentioned in the bios.
Regarding the tempurature: I noticed nothing special. I use the TJ05-ST from silverstone to guard the temps. I also double checked in the bios to be sure of the temps.
I didn't play with voltages till now, what should I know about the voltages used by CPU and memory?
Could there be some inconsistence between the FSB1066 and the memory running on 667Mhz?
The problem is solved. You will never believe this.
********** SOLUTION **********
I have a UPS with two PCI-e connectors. One is 6amp. the other 17amp.
I connected the 7900GTX card to the connector with 6 amp.
After reading a lot and a lot and a lot I came to a suggestion of someone who says that the newer graphic cards needs much more amp. then the normal ones.
I checked on internet and my card in facts need minimal 22 amp. Because I only have a maximum of 17amp. on the 12volt cable, I connected the graphic card to this connector, and ....
No more random reboots.
I hope this solution will help others who have the same kind of problems.
You are about to answer a thread that has been inactive for more than 6 months. If you still wish to proceed, please ensure that your posting is original and does not duplicate or overlap any prior responses to this thread.