Wow... that RAM is failing!... Ok you need to take out all your RAM apart from one stick. Run your machine on that one stick. If it craps out again (bsod) or fails a memtest take it out and try another stick. Keep doing this until you find a stick which works ok. If you find all sticks fail then try the other RAM slots in case it's the slot it'self which is bad. Just go through the process again with each slot. If the outcome is the same then you know it pretty much has to be the RAM.
Check the RAM settings.
Make sure sticks are seated correctly.
Failing the above means purchasing new RAM.