[Solved] Getting really bad lag on multiple programs

Hi there,
For a while now my computer has slowly started to lagg more and more. At first games like call of duty 4 and steam games wouldn't run. Now its gotten to the point were google chrome, skype, and other programs lagg as well. Either they take forever to load (or don't load at all) or they load, yet run slowly and there is a large amount of delay between typing and the characters appearing on the screen.

I am running:
Windows 7 64bit Professional SP1
16G RAM
NVidea GeForce 9600 GSO (512Mb memory)
3.5 GHz AMD Phenom II
MSI MS-7576


I've already upgraded my RAM (it used to be 8G). But when I did this I noticed my old mother board said that the processor wasn't installed properly, even though it would run windows 7 and most programs before the lag. I switched out the motherboard for a new one and I'm still having lag issues, you could even say that they are worse. I've already blocked all non-essential programs and services upon startup. Also, CCleaner, MalwareBytes and my usual anti-virus: Symantec Endpoint Protection all say that I'm fine. At this point I'm out of Ideas. Any Suggestions?

You might have to reinstall windows to see if that will fix the problem. Then if that doesn't then go to the next part that you think is causing problems. Also you might have a bad processor but I am not sure.

Try different ram or a mobo.

Sounds like you picked up on old boot sector virus. When you reloaded windows did you include MBR format or just a standard reload?

Best answer selected by ndnecoal.