1. update xpsp3 patch to year 2013

2. if you have ramdisk driver unload it

3. reboot

4. extract ntkl64g.exe, hal64g.dll to windows/system32/

5. copy boot.ini to c:/

6. reboot

Edit boot.ini file from msconfig

Dual boot
[operating systems-ѡ]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP 64G" /kernel=ntkl64g.exe /hal=hal64g.dll /fastdetect /PAE /noexecute=optin
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /fastdetect /noexecute=optin

Single Boot
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /kernel=ntkl64g.exe /hal=hal64g.dll /fastdetect /PAE /noexecute=alwaysoff

By puawei