Desktop scaling is Off

My desktop over scales the actual size of my monitor. I used to have a phone number for a computer guy and he told me one time a certain key stroke braught up a window i honeslty have never seen before and i was able to basicly custom fit my desktop to my monitor kinda like when u first set up a game via console on a big screen tv, i did an update via windows + a restart and now its back to default again. Anyways its driving me crazy i have tried everything i know plus some googling to try and fix this problem. So to cover what i have done first and for most i have Windows 7 64 bit im using a r7 360 as a gpu and the rest is not to important i am using a lame monitor HF199H HannSpree but to be noted nothing has changed or been updated other then this recent update via windows. The default screen res is 1440x900 witch its currently set on and was set on prior update also if i open my radeon settings for my gpu under scaling and over scaling is greyed out so im not able to change that and was same way prior update so nothing new there, my drivers are all up to date via checking AMD gaming evolved. If i have missed any important info please feel free to ask ill be watching for any responses thank you guys for any time you take reading this and trying to help me. Also when i take like a print screen of my desktop it shows what it SHOULD look like and not what i see witch is super odd.

Yes i have tried that and every single resolution other then the default witch is 1440x900 has black borders on the sides top and left and right. but the default also is over scalled like i cant see my date on the bottom right etc

I do have catalyst Center oddly my overscan settings are set too overscan and its greyed out i can not change it. I had this problem before but i was able to change it via another way i cant remember =/ im running a r7 360 and the drivers are up todate


With lots of trial and error what i ended up doing was setting my screen res to 1920x1080 tho not recomended by windows and set it at that res then restarted and when it re booted i was able to then change the scalling in my CCC to -10 % now my screen is back to normal. Odd how it wouldent let me even use the setting on my default recomended res of 1440x900 but none the less problem is fixed thank you for your time and efforts =)