Go ahead and Renable System Restore and restart the PC,this will clear out all old nasty restore points and create a nice new fresh clean one for you to fall back on should you ever need it.
Read through those 3 little black links in my signature to get some extra ideas about how to avoid this in the future.
Make sure you keep your Windows Operating System up to date by visiting Windows Updates regularly to download and install any critical updates and service packs.
If you ever need us again,you know how to find us!