Only one processor showing XP
This fix is if Windows XP is only showing one processor on a multi processor/core machine. 1. Boot to safe mode with networking 2. Delete (or rename) the following if they exist from C:\WINDOWS\System32\ hal.dll ntoskrnl.exe ntkrnlpa.exe (Check for these. They usually do not exist but delete them if they do) halmacpi.dll ntkrnlmp.exe ntkrpamp.exe 3. Copy the following into C:\WINDOWS\System32\ from the files described in the bottom note. hal.dll ntkrnlpa.exe ntoskrnl.exe 4. Reboot and it should fix itself the rest of the way. NOTE: The new files in step 3 were taken from the originals which can be found on other machines in C:\WINDOWS\ServicePackFiles\i386: halmacpi.dll renamed to –>HAL.DLL ntkrnlmp.exe renamed to –>ntoskrnl.exe ntkrpamp.exe renamed to –>ntkrnlpa.exe