Disable PAE on Windows XP SP3

Go to computer -> properties, it will show in the hardware specification if the PAE enabled.
Enabling PAE (by setting bit 5, PAE, of the system register CR4), which is the sixth bit from the left. 

Disable method:

Normal boot.ini with PAE & DEP

multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Micro soft Windows XP Pro x86" /noexecute=optin /fastdetect

Disabled DEP & PAE

multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Micro soft Windows XP Pro x86" /execute /fastdetect

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