The version of XP that comes with major brands (like Dell, HP, etc) is
called an "OEM" version, meaning Original Equipment Manufacturer. The
license is linked to the the original equipment and can NOT be transferred
to a new PC. 99+% of the time, replacing the motherboard (and CPU and RAM)
will define a new PC, and the old copy of XP will refuse to activate, if it
even installs at all.
Thus, I recommend that you plan on buying a full retail version of XP home
for this project (about $200). Or, if you own a copy of 98, ME, or 2000,
get the retail XP home upgrade (about $100) and be prepared to insert the
CDROM for the older version of windows when asked to prove you own a a
previous qualifying operating system. You do not need to install the older
operating system.
If you have valuable info on the partiton with XP, I recommend that you copy
it elsewhere, BEFORE attempting this major upgrade. In fact, I would highly
recommend backing up any valuable info that is anywhere on the PC. It would
be best to copy it off of the PC to some universally readable media, like
CD-R (not CD-RW with drag&drop), or ZIP, or USB hard drive, etc.
If you are lucky, you might be able to do a "repair" installation of the
existing XP on the hard drive, using the new retail version of XP. (See
links below about repairing XP.)
If not, you will need to do a clean install, and that will format the drive,
or at least the parition with the operating system. be careful, it is also
possible that a clean install will make a second copy of XP, instead of
over-writing the first one. be careful about any choices you are given
about exactly where to install the operating system.
In preparation for this installation, electrically disconnect all external
devices, except the mouse, keyboard, and monitor. Also, disconnect any
internal ZIP, or second hard drive. Once XP is up and running, re-connect
devices one at a time, and verify that XP correctly installs drivers for
them.
If you do not mind re-installing programs, a clean install is a better way
to assure a stable and happy PC.
Link about repairing XP:
http://support.microsoft.com/default.aspx?scid=kb;en-us;315341
http://www.webtree.ca/windowsxp/repair_xp.htm
http://www.extremetech.com/print_article/0,3998,a=23979,00.asp
John said:
HI
i just want to know before i go ahead a upgrade.
my brother bought an HP PC that came with WinXP Home Preinstalled with the
product key attached on the side of the case. He recently asked me to
upgrade his computer. I'm planning to disassemble his pc and only salavage
CDROM, DVD, and Hard Disks. I know this is a major change that will require
reactivation. Will there be a problem when i reinstall windows in the new
computer?