Juan Ma

hi all ! Im in a horrible situation. I was away for a few hours and when I
came back everything that has to do with internet tells me that there has
stopped working (IE,messenger,mirc,Azuerus,etc.) I dont know what its wrong
with the computer, everything was working before I left. Nobody installed
anything.

I already did a clean boot a network boot and nothing.

Also I did a virus scan and nothing happened.

What can I do ?

Thanks!