Thank you all, I solved my problem using the software sknake recommended. I was unable to delete some files because they were used and I didn't know which process used them. Now everyhting's ok.
...

Hi,

I am an XP user and trying to find out which service or process uses which file. Is there any cmd command or other way to learn this.

Hi,

I have an on board cam on my notebook, but i want to install another one. I installed some so called driver software on the CD that came with the webcam but the software sees the on-board cam,...