Windows 7 - Entire system is lagging while playing games

Hello everyone, Well today I launched Battlefield: Bad Company 2 and maybe 30 seconds into playing, my entire system begins to lag for 5 second intervals, it will stop and return to normal, but keep doing it for 5 seconds at a time..it's very annoying, i thought it was just a glitch so i restarted the game, it did it again, i restarted my system twice and tried again, but it continues to happen. I figured it was just the game, and so i Launched Crysis, and it did the same thing. I checked all my processes, and the only things i had open were skype and the game itself. I updated my graphics card drivers, I had my fans turned up all the way, everything is like it always is. I dont know what to do or how to fix this problem, any suggestions could help.
Thank you

I had something similar to this happen before my RAM died on my, but in reality it could be almost anything. A full rundown of your system specs may be useful.

Welcome to SF Klosterman95. Before we get into further details i would suggest you to test your RAM with MemTest86 which can download from http://www.memtest86.com/ Burn the ISO on the disc (Bootable) and test your RAM's for at least 3 Test's. If you have any Anti-Virus software installed so try disabling it before launching the games also make sure there are'nt any background scans running.

Mods. This is the 2nd Post about the same issue. Please Close one Post.