chkdsk /scan
If any errors found, stop and /f them
Then:
DISM.exe /Online /Cleanup-image /Restorehealth
Finally:
sfc /scannow
chkdsk /scan
If any errors found, stop and /f them
Then:
DISM.exe /Online /Cleanup-image /Restorehealth
Finally:
sfc /scannow
Malwarebytes for mac, should be a free scan. Ive had great luck with it before. I am a long time IT erm person so ask me if you have questions.
Add airflow to your router, common issue for overheating routers. May need to move it out into open, out of a closet or whatever.
If your ISP hasnt sent you a letter yet then try something much more tracked like GoT and if you dont get one after a week then you should be fine.
Hannah Montana Linux it is!
Thanks for the tool!