Changing resolution in safe mode?

Changed screeen resolution, input not detected!?

• I recently got a radeon hd 5570 and whenever I change the screen resolution from 1440x900, it says input not detected but then it changes back after 15 secs. However one time I tried changing screen resolution from the notification area and this did not allow for the 15s safety readjust so I was stuck with input not detected. I tried rebooting many times, no luck. Then I went in safe mode but it won't allow me to go up to 1440x900 because safe mode doesn't load my gpu drivers needed so it defaults to trash onboard graphics. now this is all on my windows 7 64 bit I have windows xp installed on the same hd different partition and the only resolution that works is 1440 x 900. I tried changing to all the other resolutions i could but it didn't work. So the question is how can I change the settings on my windows 7 system files so screen resolution becomes 1440 x 900 while I'm booted onto windows xp? or is there anything else I can do from safe mode?

• Answer:

  your computer should be purchased roi.ban virus software installed on computer successfully Dear