System Freezes, No Errors Logged

Okay... so I fried my value ram memory yesteday. System was on a boot loop, I troubled shooted everything, targeted the memory and ran memtest on it had over 1000 errors in a few seconds. So I bought some more, and comp started back up no problem. No ever 15 mintues... the computer just freezes on me forcing me to do a hard boot. Ive been always having issues with ram and dont know what to do here. Ive been really frusturated. Any suggestions? Its new ram straight out of the package, running memtest right now and no errors. Suggestions?

Thanks guys