thanks for the reply, it seems the problem has now disappeared, kinda weird but i'll post my PC specs and what not in case it happens again.
The specs, exactly as I read them:
Acer Aspire 5750
CPU: Intel Core i5-2430M @ 2.40GHz with Turbo Boost up to 3.0GHz
GPU: Intel HD Graphics 3000, up to 1760 MB Dynamic Video Memory
Screen: 15.6" HD LED LCD
RAM: 8GB DDR3 Memory
Hardrive: 1000 GB HDD
If it decides to mess up again i'll post a reply here.