Washed out display

I ran the check disk and repair tool today. It found and allegededly fixed some bad clusters on the hd. When the pc rebooted, the display on the monitor was all washed out looking, and said a dll was missing. Looked almost like it was in safe mode, but with some weak colors. I tried several restore points, but the restore would not restore. I looked at the settings, and color is set on low, and I was unable to change the setting, as the option for medium and high wasn't there. What do I do now to restore the proper settings? Oh yeah, the box did pop up that asked if I wanted the system to restore the proper settings, and I checked yes, but nothing changed.