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#11
Do you remember the name of these items it found? The name of these viruses will be a deciding factor in what actions you should take.
Some viruses do remove restore points or deny access to them. And they also like to embed themselves in restore points, usually the first one. If you can access a restore point after an infection, it's best to go back 2 or 3 points. Unfortunately, some viruses corrupt the entirety of restore points.
You could try the restore point in Feb, but that does seem odd there are no others, since you've no doubt had updates from MS and they, by default, make a restore point before installing.