screen resolution cannot change, screen is HUGE!

hello, recently left work on a friday afternoon and when i came back on monday after leaving my computer on all weekend and probably having some automatic updates installed. I came back to work and my screen was HUGE! i cant even fit anything in the screen. i have changed it thru the adcanced settings and changin the mode. but then it just gives ugly colors and no longer get 16 bit. its horrible. i have read somehting about the drivers being wrong buit need steps on how to correct this. thanks!

Hi, you have to reinstall your Graphic Card driver. Check your DVD's which you got with your PC, you can find there an CD for graphic. Or, you can download driver from internet. Just reinstall it and let me know if it works.