Monitor issue need help

Hey guys, the issue i'm having with my monitor is that a quarter of the left side of the screen is missing, it's just black and i'm unable to move it back to center, I've tried resetting the computer, readjusting the screen, autoadjust, I've gone into the nvidia control panel and tried to move the screen back center from there but nothing will work. I'm pretty sure the cause of this was when I recently tried to upgrade drivers for my integrated geforce 8200 but this happened and I've switched back to the old drivers but nothing has changed and i still have the same problem. I think it's a monitor problem not a vid card issue, can anyone help me with this

monitor: Hanns G Hc172 Lcd


comp: acer aspire ax1200 u1510a