So after installing paint tool sai on my computer, it continued to install a bunch of other things that I didn't want. I panicked and shut off my computer. Upon turning it on again a screen appeared with a blue window prompting me to enter a product key along with a customer support phone number (which I googled microsoft's actual phone number and they said the this number was fake) and a few options like teamviewer, task manager, and explorer. We were able to get to control panel and start a system restore. It stopped on a blue screen saying the PC ran into a problem and needed to restart and was collecting error info, but it never restarted. Anyone have a better method of restoring my computer without me having to spend $165 for Microsoft to fix it?