Where at start up, before windows loads? Do you just get bios window and then nothing?
do you have a win 10 install DVD or USB? You can get it here: Windows 10 media creation tool
We need it for a boot drive if nothing else
create USB or DVD on another pc
Change boot order so USB or DVD first, HDD second
on page after langauge choices, select repair this pc, not install
Select start up repair - this will scan pc and maybe fix boot - will ask for logon details
if that doesn't work, boot into installer and choose repair pc again,
select start up options
Select one of the 3 Safe mode types
PC will reboot into safe mode
right click start button
select device manager
select display adapter, right click your gpu
select driver tab
roll back to previous driver
restart pc and see if ti works now.
Don't rush into getting driver again, I guess. Was it the one released on Friday?