Next step would be running 'sfc' (sfc /scannow). I think I have some kind of system files & registry corruption.
I'm quite sure that I don't have malware on my computer. You can suppose that if I'm writing here it's because I'm finding some problems (and I'm unable to solve them by myself). 'sfc /scannow' Windows Resource Protection Could Not Perform The Mar 23, 2008