Malware and installed programs can modify your default parameters.
With Tweaking.com - Windows Repair you’ve got the option to restore Windows original prefs.
These steps are highly recommend to do before attempting any repairs.
Clean Your System Of Infections.
An infection can hijack a machine and keep part of the repairs from running correctly.
Since only part of a repair will work the other part that failed could end up causing problems.
Rule of thumb before working on a system is to see to it it is clean.
Even if you think your system is clean doing a scan before hand is a good idea.
Check File System
Doing a check disk on the hard drive is a good idea.
This will have Windows check the file system on the drive fixing any problem it finds.
Corrupt files can break a lot of things, including the repairs.
So making sure the file system is good is a must.
System Restore
Doing a system restore point is a great idea to do before doing any repairs.
This is highly recommended.
Start Repairs
In this final step you might choose between 3 modes.