Memory mishap

[red_star]

I recently purchased 1gb A-data ddr2 ram module to add to my pc which already had two modules of trancend ddr2 800..the problem is when i connected the a data module i started getting lot of BSODS and my computer crashed lot of times. I guessed it was software problem and re formated it still the problem remained till i removed the a data module. What can i do to solve this incompatibility?

My system specs
phenom 9650
2gb ddr2 800
350+160 Gb hdd
Ati 4850
creative xtreme audio

 

[overshocked]

What happens when you test with memtest?

 

[jsc]

Try relaxing the memory timing and raising the RAM voltage .1 or .2 volts. If that doesn't work, I guess you are stuck with 2 GB of RAM.

Maybe you can find some more of the Transcend RAM.

 

[red_star]

memory timing in the sense, the ddr2 speed? or the separate times..if i set everything to auto..the system sets it at ddr2 667mhz single channel

 

[red_star]

memtest does not work in x64