[Inactive] XP system running extremely slow

[hambone2]

Friend of mine is a mother of 2 children.

She has profiles set up 3 of them. Interestingly enough, it runs fast when they're logged into their profile, but she she's logged in, it's EXTREMELY slow processes.

A pop up is always popping up several mins and it has a lot of other junk on it...all I know it's a 6 year old system. She never did have protection even installed.

I started the FIRST step to run the Malwarebytes QUICK scan (as posted in the sticky method in Virtual DR)....well, the danged thing wasn't quick at all, thing hung up after 10 hrs, it was stuck at having found 60 infections, but it stopped, so I asked her to just stop the scan. And not continue on.

If Malwarebytes hangs up while QUICK scanning after 10 hrs, what's the next step?

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(Will keeping up with the progress on this site as the plot thickens)

PS , this might take longer than 5 days since I don't have access to my friends PC at all times.