Windows 10: How to restore system if there is no restore point?

I had to use ProctorU for my college to take a test, and when I got in my headphones wouldn't let them hear me and they kept acting like there was nothing to fix it and they were being impatient. I did not know what the problem was because I am not tech savvy. Anyways, the technician goes can I restart the computer, but they were saying they could restart it from their end you have to give them access to your computer to take the test, and I never had a problem in prior years using them. So, they restarted it, and there were updates, and now the font on my screen is small, grainy, blurry, an

:)

 

How to delete inactive System Image Restore Points in System Restore

Windows 10 64-bit.
When I click "show more restore points" in System Restore I see a bunch of old "system image restore points" that were deleted in past and do not correspond to any currently active restore points. Clicking any of these old restore points, I simply get an error message saying they could not be found, and to select another restore point instead.I would like to delete these restore points listings but have been unable to do so.
So far, I have tried steps mentioned below without any luck :

Disk Cleanup through (C Properties
Disable System Protection (OFF and ON) in System Protection for OS (C
Disk Space Usage to minimum (slider button all the way to the left then 'Delete all restore points for this drive'),
Delete all shown Restore points in CCleaner (the problem ones do not show here),
Reset Windows Backup to Default in Windows 10 with 'Reset_Windows_Backup.bat' utility.

Any suggestions highly welcome.

 

windows xp duel boot with vista restore points

Turn off system restore in XP altogether...or if you dont want to, AsRocks suggestion should work :\

 

losing restore points in vista

well i found out wich program was eraseing my restore points it was acronis true image 10 so i disabled system restore becouse i rether use ati any way