Windows 7: extract problems, random BSOD errors all those problems

hi guys

i dunno why i have many problems with Windows 7 since installation and so far

btw i wrote many topics before about my installation and eventually i didn't found any solution so i took my pc to computer shop and they solve the problem

after that i installed Windows 7 without any problems also the system was work 2 weeks without any errors

the errors started with BSOD When playing some games like AirRivals and battle for middle earth II

then "CRC Failed archive & file corrupt" with winrar and 7-zip

then random BSOD when start any program and stop a many applications even windows applications

i think this is hardware problem but i don't not if it from CPU or RAM or BIOS

so is there any one can help me to solve it or describe form which part i get those errors

Could you please upload the dmp files for analysis? http://www.sevenforums.com/crash-loc...d-problem.html