Ok, thats serious (sorry for not reading better before responding ;D :-[)

Looks like a rescue disc operation then, given you also cant get to safe mode.

But I’m hesitant to recommend one, out of caution against doing more damage than is already done. Wait for Essexboy (guy who wrote the guide I pointed you to) to come and point you in the right direction, he is the resident expert on all things infectious.