Sudden Lag in all Games!

Jinchur

Honorable
Apr 24, 2013
7
0
10,510
Hey there guys! It's me again with another question.

So, I've been playing games on my laptop a little over a year now. They play at a steady 60 fps on max resolutions. However, the other day when I played MW3, it suddenly dropped to 10 fps. I tested all my games and they all went with the same fps, some even worse. I uninstalled some of them. Now, I'm playing Arkham City and NFS: Most Wanted 2012 on the lowest resolution possible, sometimes it even lags horribly. What could the problem be? BTW my GPU is a Radeon HD 6470m or something like that, overclocked with MSI Afterburner. When it's running on it's battery it shows my GPU as an Intel GPU, but when it's plugged in it shows the Radeon name.

BTW, these were the games that I played before the lag began:
CoD: MW3
CoD: MW
Batman: Arkham Asylum
Assassin's Creed Revelations
Assassin's Creed Brotherhood

Please help me!