Disable Unwanted Programs and Services
1. Click Start | Run.
2. Type MsConfig and press ENTER.
3. Disable unwanted programs and services from respective Startups and Services tabs.
4. Click Apply | OK.
5. Restart the computer.
Remove Obsolete Registry Entries
Windows 7 freezes due to obsolete and incorrect registry entries. You have to find and delete such junk entries. It is not a simple task. That is why; a third-party Registry Cleaner software is recommended.
Uninstall the Programs that you No Longer Need:
1. Click Start | Control Panel.
2. Click Programs | Uninstall a Program.
3. Select a program that you wish to remove.
4. Click Uninstall button.
5. Follow the wizard.
6. Do these procedures for the other programs that you wish to remove.
The best way is to clean pc with RegInOut and PC Optimizer to fix Windows 7 bit freezing issue.