Windows 7: Internet works on Ubuntu, but not on Windows 7

Hello
I'm dual booting Ubuntu and Windows 7 and I've got a wierd problem. Internet, both wireless and wired, works normally on Ubuntu but doesn't on Windows. I've installed wlan drivers but Windows somehow doesn't recognize any networks. Does anyone know how to fix this?
This is my computer.

Maybe the Msoft trouble shooter for this will help.
Troubleshoot problems finding wireless networks

Do you have any virtual adaptors blue tooth or VPN's enabled on this system?

Troubleshooter didn't help at all. It only suggests that something is wrong with my wireless but that's not the case because wireless works on Ubuntu and my mobile phone.
I don't think so. How do I check that?

I think I've found out what's the problem, just don't know how to fix it. I opened the device manager and saw that there is a problem with drivers. Here is the screen shot. I've tried reinstalling drivers (even tried older versions) but nothing seems to help. What should I do?

I haven't really seen this before so not sure what might be causing it.

It seems as if some system files may have become corrupted.

Try running the sfc/scannow command and see what it finds.

It might help to run a start up repair from the Windows CD a few times.