General system maintenance everyone should do

Computers tend to bog down over time. Some simple maintenance every 2-4 weeks (depending on computer use and programs installed) will only take 10-30 minutes, can be performed at any knowledge level and will keep your computer running smoothly. With this guide, and two downloads, you will see a noticeable improvement. This is fairly basic and something all computer users should do.

1. Remove all programs you no longer use or knew about.
2. Do not use Multiple Antivirus Applications or Software Firewalls.
3. Cleaning your hard drive of unneeded files.
4. Remove invalid registry entries.
5. Startup items: remove all unused programs.
6. Defragment your hard drive.

Remember: slow PC is not always caused by spyware or viruses. It could just be due to what you run!

 Full instruction and more good advices can be found here.