|There is a free version of Avast so you don't need to pay for it.|
Have you any Anti-Virus on the system, if so which one? It is bad to have two running in the background at once (slows things down - they check each other).
Up to you but I would be inclined to at least run these two just to make sure nothing odd is going on (both free and often find what AV's miss):
(green Download button top right - not anything else on the page)
Run the program but before doing the scan go to "Settings > Detection and Protection" and put a checkmark in "Scan for rootkits".
(blue Download button near top - not anything else on the page).
Download and "Save" the file somewhere. Go to the saved file then double click it to run the Scan. You then have options to remove whatever it shows under each heading in the table that appears below, although it is usually safe to run "Cleaning".
If either find anything please copy/paste the logs on here so that we can see what is happening? They will not clash with anything as they are only run on demand.
Always pop back and let us know the outcome - thanks
message edited by Derek