If it's an unstable overclock, it could definitely be the problem. Try one of these programs for testing stability. If you get bluescreened after running the program, then your overclock is probably the issue. Keep in mind, it can take anywhere from 1 minute to 48 hours to see an error, but since you've been crashing in IE under low load it shouldn't take that long: http://www.mersenne.org/freesoft/ http://majorgeeks.com/IntelBurnTest_d5987.html