new graphics tablet question

ok guys is i have an interesting one hoping you can help me
first list of ingredients.
2 PC’s one tower one laptop running windows 10
one Parblo a610 graphics tablet

on my laptop i have full usable space in the entire 6x10 rectangle created by the white corner markings.
no problem there.
on my tower (im like 89% sure it wasnt like this yesterday) i have a usable area in the tune of 4.5 vertical by like 7 horizontal (btw inches for everything.)
ive tried the tablet calibration thats a part of win10



and ive tried the “scope” thats a part of my tablet drivers.

what could i be missing???

anyone???