BF3 just randomly crashing while playing Multi-player!

Hello, This has been happening a lot. It happened on my old PC and my new PC(I currently play on) I will just be playing a MP match on a server in BF3 and just randomly the game will crash to my desktop saying "the game has stopped working" I really can't explain it. Maybe it's the server? Maybe it's the game? or it's my PC? But since it happened on my old PC I can't decide. I have my i5 overclocked to 4.4ghz and I have my nvidia gtx 560 ti 448 video card over clocked to 848ghz core clock. I did overclock my gpu on my old computer so do you think that could be causing the game to stop working? Any help would be great!