I want know how to change the xp from vista?

i want know how to change the xp from vista in this query i have some problem facing hard disk not conneted showing ple help usI want know how to change the xp from vista?
I have done that immediately as i got my thinkpad t400 and am still running it today. All you need is an XP disc. Put it in your drive and boot up your computer. (because most computers seem to have boot set to the disc drive first i'm just going to assume this fact) After you have turned on your computer you will be faced with a black screen prompting you to press any key to boot disc. Windows xp will start its preload and there will be instructions on a white strip at the bottom of a blue screen. Just follow the instructions until you come to a screen that shows your partitions. Delete all your partitions by following the instructions on the bottom of the blue screen and create 1 new partition. Then just hit ENTER to intsall XP into this partition. A partition is a segment of the HDD and by creating 1 partition you will have used most of your HDD to be accessed by the operating system.



After the reformat and installation you should encounter a screen that is just like the day you bought it.



Once everything is installed you must go to your manufacturer's website (whether it be dell or hp or lenovo or compaq or anything and download the DRIVERS in the support section of the SPECIFIC MODEL of your computer. You can see the missing drivers in the hardware manager of xp.



At this point i've come to the realization that you might not have the technical skills required to do this. It is much simpler than it sounds and if you can get your computer to a local computer repair store or something like that. Tell them you need a reformat and reinstall of windows xp then they should be able to do it within a couple hours MAX.I want know how to change the xp from vista?
...you cannot switch on to an older version if you have vista installed on ur Hard Disk...

but you can always use LAN to format ur HD...and then install XP(bootable needed in this case)..hope it helps..!!..