OC related issues?

So i have a P II x4 965BE. Had it on 3.8ghz for a while now.

Overclocked it to 4.0 stock volts. Computer was working fine without heat problems (47C under load)or errors.

Yesterday my League of Legends started crashing (did it twice) alot of weird errors. I tought it could be related to the overclocking?

I also updated the newest nvidia drivers before the software error.

Any advice?

I guess it's not stable, then? Did you run IBT or Prime? Upped the volts?C_Rule

But do you think a possible unstability can be the cause for this? Just software error, not a single BSOD.