My computer has been getting slower and slower. I have Windows One Care, but it does not show any viruses or spyware. Can you recommend other tools to find malicious software that might be making it slow?

There are many reasons your computer may be slow or unstable. Here are a few free tools we can recommend:

Spybot: www.safer-networking.org
Searches for spyware and optionally quarantines it

Advanced System Care (Free Version):
www.iobit.com/advancedwindowscareper.html
Tools available to repair registry, optimize hard disk, remove spyware, etc

Check with your ISP. Many ISPs offer free system utilities.