What is it?My gpu?

Ok this started recentyl, yea i have been overclocking gpu but not soo much and now its on default.It doesn't Crash in games. Only when googling and watching on youtube On Google Chrome.It doesnt happen on others etc. Mozilla , and Internet Explorer.
Chrome is on its latest update.
Specs:
E5800 3.2Ghz pentium Dual-core
Asus p5g41-m lx/2 GB
4GB ram
Amd radeon r7 250 XFX 1gb OC edition
Win 7 64x sp1 professional

TO DA PIC

PS. Should i switch to Mozilla?