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Changing WinXP Home to Professional?

post #1 of 8
Thread Starter 
Ok, so, my grandma purchased a Compaq computer about 5 years ago, and it came with Windows XP Home Edition. Now, her computer is slow so for Christmas we upgraded it to a Dual Core and 2GB RAM. Since we changed the motherboard, the OEM Windows version that came with it is saying we have to activate it to log on.

We have a spare copy of Windows XP Professional that I'm wanting to install on it, but want to keep the files on her computer in tact. Is this possible? Everything I'm reading says there's no built-in upgrade option like there is with Vista and Windows 7.

I'd prefer to not have to reformat the computer, and was just assuming this would be easier than seeing if Microsoft would allow me to reactivate this version.
post #2 of 8
Honestly the best thing is to buy a new hard drive, install XP Professional on it, and keep the old hard drive there for all the data that can be moved over piece by piece as times goes on. Reformatting is the only way to get to XP Professional though, unfortunately frown.gif.
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post #3 of 8
Do you have another HDD laying around the house? If so, You can install the OS on there.
post #4 of 8
Thread Starter 
Hmm, I don't have a spare HDD here with me, but I could probably find one later. One more question though, There are two partitions:

H: Partition1(Presario_RP) [FAT32]
C: Partition2(Presario) [NTFS]

I imagine the one that says Presario_RP is a repair partition, is it safe to delete that one and install XP Pro on that? It's a ~8.5GB partition, or is that too small?
post #5 of 8
can u not phone the toll free number and activate windows, i have done it tons in my house for my oem licenses when upgrading.
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post #6 of 8
There is no way to upgrade in place. Also, you can't reuse the COA key from the Home version for the Pro version. If you have a generic OEM Pro disc then you'll need an unused Pro COA key for that. If it's a Compaq branded one then you won't need a key assuming it's on the disc.

Just call the number to activate. This happens all the time.
Edited by opensesame - 12/28/10 at 7:16pm
post #7 of 8
Just call the number, and activate..
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post #8 of 8
Thread Starter 
Yea I called and now it's activated. We put all the parts into the computer on Christmas Day, so I tried calling then and it took forever and I eventually got disconnected, so that's why I was wanting to not have to do that. But this time it was real fast, so I guess it was all Christmas problems.

So, I didn't have to install anything else, so this thread was kinda useless haha!
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