Bear with me on this as I want to have others input to make sure we do what is right for you.
This is the link for your laptop drivers/downloads:
»www.csd.toshiba.com/cgi-bin/tais ··· 73768663
There are bios updates that suggest there are fixes for nvidia. (graphics) on that laptop.
However I'd like others input first.
If you say you can get into safe mode, I would copy off all data that you want to keep, photos etc onto an external hard drive if possible.
As you seem to have access to a computer? You maybe able to unplug the HDD out of the laptop, hook it into the computer you post here with, and back up your data and possibly a scan with an anti virus too first. Backing up all your photos, music, files etc is the most important step right now before we go any further.--
The only thing necessary for the triumph of evil is for good men to do nothing - Edmund Burke