Ok so i ran the Boot Scan with the Avast thing, and it did find and delete one file, but after coming back onto the computer i found that Ctrl+Alt+del still doesnt work, ialso got a warning from norton about something with 'ash' in the title attempting to access the internet, and it recommended i block always, which i did.

I then found i couldnt even connect onto the internet at all with the avast icons in my toolbars, i had to deactiviate it to get it to work.

So now that i have run the boot scan, is there somethin else for me to do?