Couldn't really find an exact forum for this, so I chose the closest one.
Most of the guys in our family are very PC literate and knows almost everything there is to know, but this one is really kicking our ass.
We built my father a PC back in Feb of this year, it's been problems ever since. At first all the browsers would constantly crash, Windows would lock up, tons of Windows errors. Replaced the ram and it was good for a few weeks. Now it's just slow as a turtle, trying to browse the web results in the PC constantly locking up, Windows freezes a ton, it takes almost a minute for the browser to open up,. BUT games run absolutely fine, I can max out BF3 without it freezing, lagging, or even skipping a beat, same with every other game installed on this computer at the moment, any advice or help would be appreciated, here's the specs.
Edit: We have reinstalled Windows 7 4-5 times, that fixes the problem for about a week.
MSI 760GM-E51 mobo
AMD-FX 6300 @ stock clocks
2x4GB of PNY XLR8 1333 ram (Orignally had Corsair Vengeance LP)
WD Green 1TB HD
PNY GTX 650 1GB
some 500W raidmax psu that came with the case.
tons of fans with lights and stuff