My PC worked fine - 5 months. I have inserted two 2gb ram sticks. With both rams, my computer freez, mostly in games. Both rams are OK, tested with memtest. But whit one ram my PC works fine. I've tried with difrent rams, graphic card, power supply, updated all drivers and BIOS ... Plese help.
windows 7 64 bit
AMD Phenom IIx4 955
M4A79XTD EVO - motherboard
A-DATA DDR3 1600+ (cl 8-8-8-24;1,65-1,85 v) - ram
LC6600 600W - power supply
SAPPHIRE HD 4890 - graphic card
I placed a-data back, flashed bios, adjusted RAM timings and voltage. If I place both modules in black or blue slots together, PC freez on windows logo. If I place one in black and one in blue work fine, but in single channel. Memtest ( 5 hours ) with no errors in single channel mode.