ccomputer problems

I just spent 2 hours scan disking and defraging this computer.
Something is writing to the disk and I cannot figure what.
I disabled everything that had the option and set my screen options to 60 minutes.
I have limited computer skills so its probably something I haven’t thought of or don’t know how to do.
The guy that upgraded this computer noted the problem but didn’t do anything about it.Something about windows I think.
Its taking longer and longer to scan and defrag.

How do you find whats writing all the time???

Any ideas or instructions would sure be appreciated.

Duplicate thread.