I have a problem with my laptop. After an hour or so of using it, it suddenly freezes and the screen goes black. All sounds stop, Skype calls are ended and the only way to get out is to force shut down. Can someone please help me. It has an AMD A6 2.7ghz Dual Core CPU, 4GB RAM, 1GB Radeon Graphics and is running Windows 7 Home Premium. I am using a cooling pad on this laptop yet that seems to make no difference.

Many Thanks,
daninjaXD