Mobo: Asus P5QEM-DO
CPU: Core2 Quad Q9400
Ram: Kingston Value Ram 4GB Kit 2x2GB DDR-800
Graphics: Geforce GTX 260
HDs: WD 640GB und Samsung Spinpoint 750GB
Power: Bequiet Straight Power 500W
Now the Problem
I realized that it isn´t possible to put one of the ram sticks into a DIMM A slot. The system doesnt post when there is.
Now the Mainboard complains about the system being unstable due to intel quiet system technology needing at least one ram stick in DIMM A but i can install Windows XP and all necessary programs.
Now the real problems begin, the system starts up into windows and then just does a restart. This goes on forever, but sometimes the system starts up and is stable for hours. But most of the time its impossible to work.
I also realized that installing SP3 makes it worse.
Following error messages where encountered Stop 0x00000050 and Bad Bios Checksum
What I did
I upgraded to the newest Bios Firmware
I changed almost all parts from
Mainboard Asus P5QEM-DO ---to--- Asus P5E-VM HDMI
RAM Kingston ---to--- Corsair DDR2 XMS2-6400 4GB NON-ECC
Graphics GTX 260 ---to--- ATI Radeon Vapor-X HD-4870
No luck so far still no stable system (exactly the same behavior) and I cant put the ram into a Dimm A slot but at least the new motherboard doesnt complain about it.