I recently assembled a new computer out of necessity (the PREVIOUS one had its motherboard fried by a failing PSU) so this is a new Windows XP install (about 3 weeks old).  The system works OK except for one odd glitch--I have SET the display preferences to display the Windows Classic theme rather than the XP theme, and I have set screen savers to "none".  Regardless, about 1 out of every 5 bootups, the display reverts to the XP theme and screen savers reverts to the XP screen saver, set to come on after 10 minutes.  I then have to go into the control panel and reset the display preferences back to Classic and no screen saver.  This has happened a half dozen or so times now.

If it were just a matter of screen appearance, I could live with the problem.  However, as this setup is used as a digital audio workstation, it is important that the screen saver be disabled.  I suspect this is a registry glitch of some sort.  I am not expert in editing the Windows registry. 

System details:  CUSTOM built system (by yours truly), MSI 785GTM-E85 motherboard, AMD Athlon II 635-X processor, 4 GB RAM, EVGA GeForce 8400 GS display adapter, Windows XP with SP3 (freshly installed from genuine Microsoft install disk), Lynx One PCI sound card, Firewire PCI card by ADS (Texas Instrument chips).  System routinely used with Digidesign 002R firewire interface. 

Installed software includes Pro Tools LE 7.4, Sound Forge 9.0, CD Architect 5.2, QuickTime player 7.0, Sony Vegas 7.0, Waves Native Power Pack audio plug-ins, Waves Restoration suite plug-ins, CD Burner XP, Corel WordPerfect Suite 8, Microsoft Word 2000, utilities associated with a Canon scanner and a Canon printer, Mozilla Firefox browser, etc.

There is no installed anti-virus software (which can interfere with professional level audio use).  I did try installing and using Iolo's System Mechanic program for checking and repairing the Windows registry, but no change was noted in system behavior.  Since no one has answered so far, this is an update to my previous post:  I decided to try establishing a new USER account to see if my display preferences would be recognized there.  So far they seem to be, but the new user account has another problem: it will not associate .PTF files with Pro Tools LE.  I have gone through the File Types association process in Folder Options in the control panel several times, and it simply refuses to work.  Pro Tools LE works fine, and I can open Pro Tools session files (.PTF) files from within the program no problem.  But Windows will not associate those files with Pro Tools, so I cannot open a Pro Tools session by clicking on the file itself, even when Pro Tools is open and running.  Any suggestions?