*Ouch* Sorry to hear that. I suggest you install WinXP with SP2, all needed system drivers for your hardware, and here are a few tips I found on one Bosnian forum that will hep you optimize your XP for performance. Dont have to follow all tips blindly, choose according to what your machine purpose is intended to be. I think for music production exclusive machine, you can follow all this tips...
Taken form:
http://forum.bihnet.ba/showthread.php?t=33773 and translated
Note: (*) = my comments.
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1. Processor scheduling
Processor priority should be set to background services, not programs, no matter how ilogical it may sound.
Start > Settings > Control Panel > System > Advanced > Performance Settings > Advanced Tab > Background Services
(*) Not too sure about this tip myself.
2. Visual Effects - set for best performance
Start > Settings > Control Panel > System > Advanced > Performance Settings > Visual Effects Tab > Adjust for best performance
3. Turn off desktop background picture
Start > Settings > Control Panel > Display > Desktop > Background > None
4. Turn off screen saver
Start > Settings > Control Panel > Display > Screen Saver > None
5. Turn off Fast User Switching
Start > Settings > Control Panel > User Accounts > Change the way users log on or off > Use Fast User Switching (unselect)
6. Switch Off Power Schemes
Start > Settings > Control Panel > Power Options > Always On > Turn off monitor i turn off hard discs set to Never
7. Switch Off Hibernation
Start > Settings > Control Panel > Power Options > Hibernate > (unselect) Hibernation
8. Activate DMA on Hard Discs/CD ROMS
Start > Settings > Control Panel > System > Hardware > Device Manager > IDE ATA/ATAPI Controllers > Right button to Primary
IDE channel / Secondary IDE channel > Properties > Advanced Settings Tab > Set Transfer Mode to "DMA if available" for both devices.
(*) AFAIK, installing proper drivers for your motherboard sets this things to DMA automaticly.
9. Disable System Sounds
Start > Settings > Control Panel > Sounds and Audio Devices > Sounds Tab > Sound Scheme set to 'None'
11. Disable System Restore
Start > Settings > Control Panel> System > System Restore Tab. Select "Turn off System Restore on all Drives"
12. Disable Automatic Updatees
Start > Settings > Control Panel> System > Automatic Updates > Turn off automatic updating. I want to update my computer manually (choose this)
(*) I set it to "download, but let me choose when to install them". I believe it's important to have all updates and patches.
13. Startup and Recovery Options
Start > Settings > Control Panel> System > Advanced > Startup and Recovery Settings > (unselect) Automatically Restart
14. Disable Error Reporting
Start > Settings > Control Panel> System > Advanced > Error Reporting > Disable Error Reporting
15. Disable Remote Assistance
Start > Settings > Control Panel> System > Remote > (unselect) Allow remote assistance invitations to be sent from this computer
16. Fix Swap File size
Start > Settings > Control Panel > System > Advanced > Performance Settings > Advanced > Virtual Memory Change > Custom Size
Set initial and maximum to same value.
(*) The higher of two, obviously.
17. Speed Up Menus
Start > Run > (type) regedit and look for following keys
HKEY_CURRENT_USER > Control Panel > Desktop
On the right:
Option MenuShowDelay set to 1 - doubleclick MenuShowDelay and type 1 in VALUE DATA (in new opened window)
18. Disable Offline Files
Start > Settings > Control Panel > Folder Options > Offline Files (unselect) "Enable Offline Files"
19. Disable Remote Desktop
Start > Settings > Control Panel > System > Remote > (unselect) "Allow users to connect remotely to this computer"
20. Disable Internet Synchronise Time
Start > Settings > Control Panel > Date and Time > Internet Time > (unselect) "Automatically synchronize with internet time server"
21. Disable Hide Inactive Icons
Start > Settings > Taskbar and Start Menu > Taskbar TAB > (unselect) "Hide Inactive Icons"
22. Disable Automatic Desktop Cleanup Wizard
Start > Settings > Control Panel > Display > Desktop > Customise Desktop > (unselect) "Run Desktop Cleanup Wizard every 60 days"
24. Disable Notification Area Balloon Tips
Start > Run > (type) regedit
from the left:
HKEY_CURRENT_USER > Software > Microsoft > Windows > CurrentVersion > Explorer > Advanced
Go to EDIT in menu, then New and then DWORD value, name it : EnableBalloonTips and set value to 0.
(Pay attention to cApS)
(*) You can do this in XP-AntiSpy.
25. Disable Disc Indexing Service
My computer > for every HDD Properties > (unselect)
"Allow Indexing Service to index this disc for fast file searching"
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I strongly suggest installing XP-Antispy (no real installation, unzip, run and set options)
http://www.xp-antispy.org/
(site does not work at this moment) and switching off more unwanted crap from your system. And after all this has been done, and updates have been installed by automatic updates service, make a ghost image of your clean XP system before installing any software on it, so any later reinstalls (if needed) would be less painfull and a whole lot faster.