Very high RAM usage Rundll32.exe

Did you get to finish running TFC?

Delete the System Restore Points

• Click on right-click on Computer, and then select Properties.
  
• In the left pane, click System protection.
  
• Under Protection Settings, click Configure.
  
• Under Disk Space Usage, click Delete.
  
• Click Continue, and then click OK.

Create a new System Restore Point

• Click on right-click on Computer, and then select Properties.
  
• In the left pane, click System protection.
  
• Click the System Protection tab, and then click Create.
  
• In the System Protection dialog box, type a description, and then click Create.

Why do you want to reinstall windows ? Yes it would . But you would have to tell windows where everything is again .