|There is no Microsoft supplied "win defragger tool" that I know of .|
There IS Win Defrag and Windows Defragger, both of which are programs NOT supplied by Microsoft.
"Win Defrag is a rogue computer optimization and defragmentation program from the same family as Win HDD. This scareware wants to scare you into thinking that your computer has some problems and issues. Win Defrag pretends to scan your hard drives and system memory for various errors. Then it states that you need to use the defragment tool to fix supposedly found errors. It fixes some errors for free and then prompts to pay for a full version of the program to fix other programs as well. Please do not fall victim to this rogue program and remove Win Defrag from your computer upon detection. "
You may be the victim of a "rogue" program that makes it appear that there is something wrong with Windows,
Malwarebytes specializes in getting rid of those types of programs
How to download, install, and run the free version of Malwarebytes:
See response 1:
Note that sometimes you can only install Malwarebytes in Safe mode - in that case, loading Safe mode with networking is required in order for it to be able to update itself.
Ignore the part about loading your latest System Restore restore point unless you did what the guy in that Topic said he did in the first post - loaded a previous restore point.