BSOD at random times

So after a while of no upgrades to my computer i decided to get some new ram and a new cpu...At first i just instaled the ram and cpu... It was good for 5 min than BSOD i restard BSOD again and so on and so on... And it's frustrating beacuse sometimes i dont get a BSOD for the whole day sometimes i get it 3 times in a row and soo on...I've ran memory diagnostics with no erors 10 pases. I tried memtest too also with no errors... But i still think it has something too do with my RAM soo anyway i will post some basic info of my OS and attach the dump files and such...

- My os is x64 ?
- First it was win xp than vista than win 7
- full retail version-Fresh install a week ago
- I think it's not more than a year old (Hardware)
- I have reinstalled win 7 but nothing changed BSOD-s all the time

When you do hardware upgrades, such as you have done, it's best to only do one thing at a time, e.g. only the CPU or only the memory and then test it and run it for a couple of days to make sure it's all working correctly and then do the next hardware upgrade. Doing it one at a time, if there is a problem you know what it is. Doing more than one thing at a time and you don't know which one caused the problem. As it's easier to remove memory, suggest the first thing you do is fall back to the original memory that worked OK and see if the problem (Blue screens) go away or if you still have them. If you still have them, the most obvious problem would be the CPU (or possibly some incompatibility problem with this CPU and your motherboard or BIOS).

Okaj i've tried my old ram and i didnt get a bsod i ran fine for a day but as i said the BSOD-S are at random times so i never know it could run for 2 days whitou one or get one in a sec...As for the CPU my motherboard manufacturer claims compatibility with my phenom 2 x4 955 and i have updated the BIOS to the latest version