First of all, I'd try another monitor, so you can work continually again.

Then we have 2 issues left:
1. The PC always boots into Safe Mode.
2. There's a popup saying that some programs are blocked.
and that's all you tell.

So I'm afraid we'll need more info for effective help.
a. Press f8 repeatedly when Windows loads, so you get into the boot menu. Try all choices (that's a lot of shutdowns, indeed). Which ones work, which ones don't work? What (error) messages do you see?
b. Even in Safe Mode such a box telling about blocked programs is uncommon. So please tell the exact message, including what the blocked programs are.