Nontek, I don't have Malwarebytes - is this something I could download on the laptop I'm using while pc is disabled and then transfer it by memory stick to pc in safe mode?

Buteman, downloaded Malwarebytes but could not transfer installed program (also did not know how to disable Avast! antivirus when installing/updating). Have therefore transferred the download and installed it on infected computer, obviously not fully updated. It has not worked. Can you suggest what I was doing wrong transferring (I simply transferred the whole Malwarebytes folder)to the memory stick?

Am having problems with both Malwarebytes (i discovered how to disable Avast!)and hitmanpro. Despite updating Malwarebytes on laptop, when I transferred it to infected pc I get message saying it's out of date by 9 days. Thought I'd screwed up so repeated whole process, still get the same response.

Hitmanpro says it can't work on infected computer because there is no internet connection.

Any ideas my friends? (Am running full scan with Malwarebytes - no idea how long that will take, previously only did the quick scan - will obviously report back on results when it's done)