resolution help

i restarted my computer and when it came back it was at 1024 x 768 instead of 1400 x 1050. i didnt change anything so i dont see why it would do this. i uninstalled and reinstalled the nvidia drivers twice but it will still only let me choose 800x600 1024x768 1400x2100 (wtf is 1400x2100 lol)
what should i do?

Did you use Driver Cleaner Pro, its recommended that each & everytime you use this cleaner when updating you vards drivers. It removes registory files left over from the old drivers. You need to put all your PC spec's in your sig so we know what hardware you have.