Unable to change Vista OS to XP; now computer won't turn on..?

I tried installing XP but got this error message in the installation window:

Setup couldn't copy this file:

cmnicfg.xml

ipcfg.xml

osinfo.xml

potscfg.xml

pppcfg.xml

xmlp_bdg.xdr

xmlp_bec.xdr

xmlp_beu.xdr

xmlp_ecp.xdr

xmlp_ecu.xdr

xmlp_fcd.xdr

xmlp_fcw.xdr

xmlp_hlp.xdr

xmlp_loc.xdr

xmlp_mas.xdr

xmlp_mcc.xdr

xmlp_mcu.xdr

xmlp_mpc.xdr

xmlp_mpu.xdr

xmlp_reg.xdr

xmlp_ssd.xdr

xmlp_wiz.xdr

xmlp_wp.xdr

After I skipped these files and entered the Windows installation screen gui, I got a system error message. I was then forced to restart. The comp won't turn on now. Is there any way to make a bootable iso with the files that didn't copy? If not, how can I fix this?Unable to change Vista OS to XP; now computer won't turn on..?
If your comp can't turn on at all, forget about bootable ISOs. Take it to a repair shop.

Otherwise, many Vista users have complained that they can't install XP in dual-boot (or sometimes even just revert to XP). I'm unsure why, but Microsoft feel like breaking your balls and making you keep the new OS. (This is what I heard back during the beta, unsure if it is true now.)Unable to change Vista OS to XP; now computer won't turn on..?
Use a backup you made of the XP installation, before you tried Vista.

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