Resume from sleep mode problem XP 64bit

i never shut own unless required by application, about 2 out of 5 resumes the display even login screen "looks like" the resolution is lowest setting although every time i go to propertines it the same as normal , so every time this happens i just go from 1864x1036 and back to 1680x1050 (any will work of course) its been about 6 months now and it gets a little annoying , this has never happened till i got a new computer i7-2600 12gb ram, that had win 7 and i didnt want to re-learn windows so i installed xp 64 2003 service pack 2, and had to install video,wifi,and sound card , the usb 3.0`s work ;) weird huh

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