It is usually a sort of software error somewhere in your computer.
To start with, I would suggest, if you haven’t been doing it, defrag your hard drive. This should be done weekly to keep it clean. Cross-linked files are a sort of software errors.
Clean your registry. I use PCTOOL’s Registry Mechanic to keep my Windows Registry cleaned up on a daily basis.
Clean your hard drive. Go to My Computer, select Drive C:, click on “Tools”, then perform the various disk cleaning chores. Twice a month.
Go to Browser’s “Tools” on the menu, click on “Delete History”. Do this each week!
All these should go a long way to clean up your computer and keep it clean!
Lots of good suggestions. Thx very much! I’ll try them all.