FS Startup Problem

Hallo,
I bought my copy of FS 2004 several days ago and had no problems with it. Now I upgraded from Windows 98 to XP.
After that FS started rebooting sometimes during a flight but worked again after that. But after the last reboot crash it does not want to start again. If I try to start FS it always stops loading after it checked the CD, I can only see the "a century of flight screen" with the DC 10.
I reinstalled it several times, erased the FS Files in "My Documents", moved it to a different partition, I've gone through all the steps of the Microsoft known issues page but it still won't work. The "FS Files" in "My Documents" is not created during the short loading time.
I upgraded to the newest Direct X, disabled the Nvidia Help, upgraded my display and sound drivers...nothing seems to help!
(Athlon 1.33, 256MB, Win XP Prof., Geforce 2 GTS, K7S5A)
What else could I do except reinstalling Windows?
Thank you for your patience.
Ruben
I bought my copy of FS 2004 several days ago and had no problems with it. Now I upgraded from Windows 98 to XP.
After that FS started rebooting sometimes during a flight but worked again after that. But after the last reboot crash it does not want to start again. If I try to start FS it always stops loading after it checked the CD, I can only see the "a century of flight screen" with the DC 10.
I reinstalled it several times, erased the FS Files in "My Documents", moved it to a different partition, I've gone through all the steps of the Microsoft known issues page but it still won't work. The "FS Files" in "My Documents" is not created during the short loading time.
I upgraded to the newest Direct X, disabled the Nvidia Help, upgraded my display and sound drivers...nothing seems to help!
(Athlon 1.33, 256MB, Win XP Prof., Geforce 2 GTS, K7S5A)
What else could I do except reinstalling Windows?
Thank you for your patience.
Ruben