Montior can't handle refresh rate

[Hail The Brain Slug]

I was messing around with my refresh rates, and set it to 100 Hz, which promptly sent my monitor into a craze. The screen is all garbled and I can't make anything out. I thought I should wait to see if it would reset back to 75 Hz, but it didn't. Is there some way I can change it back to something that my monitor can handle, without being able to see anything?

 

[Wellsoul2]

Reboot in safe mode and then change it to default in display settings.