After installing windows 7 on a probook 6450b, Problems installing XP


New Member
I am having a problem installing xp on a probook 6450b.
I first installed Windows 7 on my hp probook 6450b, during installation I created 3 partitions on the 250gb harddisk. The first one is "System Reserved", The second one is "(C:smile:" where I installed windows 7 on and the 3rd one I left "Unallocated". Everything went fine with with the install after I rebooted, I installed all the updates for windows 7.

After all that I restart and try to install windows xp. After hitting any key the blue screen That says "windows setup" and starts loading files. After that the screen says "setup is starting windows". Just after that I get BSOD the screen, it says

"a problem has been detected and windows has been shut down to prevent damage to your computer.
If this is the first time you've seen this stop error screen, restart your computer. bla bla bla

the stop code I get is
0x0000007b (0xF78D2524, 0xC0000034,0x00000000,0x00000000

The windows 7 load is still working fine. I want to have windows 7 and windows xp on this computer.
Did I skip a step for setting up dual boot on this harddrive?