Originally Posted by James_Littler

That'll be to do with under-volting it rather than overclocking, and yes, I get this too sometimes.

Do this in terminal;

Code:

root

Code:

kernel-config load default

Code:

kernel-config limits 250 1000

Where 250 is min freq and 1000 is max freq (change as you see fit)

Test that out, if videos work again and your happy with everything:

Code:

kernel-config save myconfig

Saves your config file as 'myconfig', you can specify a path if you wish.

Code:

kernel-config default myconfig

Loads 'myconfig' as default.