Overclock Crash When Watching Youtube Video?

AlfexOmega

Honorable
Oct 7, 2013
18
0
10,510
Ok, So I can run 4Ghz fine on my I5 4670k perfectly stable running any games. I decided to try 4.2ghz and I ran prime 95 today for around 6-7 hours while at school it had no problems and as soon as I watch a youtube video about 2 minutes in I get a crash with an extremely large screeching noise through the speakers I have tried a few times and it only happens when watching A video?