Yet another Case of the constant repeater: P4VMA-m v7.x P4 3.0ghz flashed with latest BIOS Original stick: Advance Modules ANTEK AM256D08C2C-PC3200 32M X 64 DDR S42134 256MB,400MHZ,CL3 Replacement Sticks: Crucial Ballistix BL6464Z402.16TG Batch : CL1115Q.1M PN : 47072 PC boots up just fine with original stick. When attempting to either add another stick to the configuration or changing the original stick for another stick of memory will go into a continual rebooting process, partially loading up any program only to freeze or reboot. Attempted to run memtest86x as well as microsofts equivalent but neither program will run through with the new memory installed. Meaning they will reboot before fully loading or will freeze up with a nice scattering of characters after the program initializes. This is the second time I have attempted to upgrade the memory to no avail, last time I attempted with a stick of memory that had the same states except CAS was 2.5 instead of 3 and size was 512mb. Ended up using that stick in another computer without any problems. Do I need to mess with the BIOS default mem timings? if so which ones? right now it is set to By SPD. Or is this a terminal problem? btw the Crucial stick is supposed to be able to run at CAS 2 naturally. Any help or suggestions would be highly appreciated.