Moving Windows 7 Home and Hard Drive to Older Computer

I have a situation where I can or can't perform this transfer.

Here's my situation.

I have a HP Pavilion 775e running XP Home, and a HP Pavilion p6750p running Windows 7 Home. I have a (New) #A7N8X-LA 5187-4113 motherboard...This is the exact motherboard that is in the HP 775e PC now. I would like to remove the Hard Drive in the HP p7650p PC with the Windows 7 Home and install it in the HP 775e PC with the NEW motherboard in the XP machine so I can have Windows 7 on the older PC and get a new Hard Drive for the HP p6750p and install Windows 10 when it's available.

Now the big question> Can this be dome?

 

https://www.microsoft.com/en-us/download/details.aspx?id=20

download the tool above and run it on the xp pc, this will tell you what you would have to upgrade to run win7 on the xp pc. It will most likely be more than just a motherboard.

 

Thanks for the reply. I have ran the Windows 7 Upgrade Advisor and it tells me I'm okay for the upgrade. What I'm trying to get across is the fact I want to use the Windows 7 disc(s) three in all) that I have for my HP p6750f computer to transfer to the XP computer without buying another Windows 7 software. Keep in mind I'm wanting to remove the hard drive in the HP p6750f Pc to the HP 775e Pc with XP. With that, I have a new (exact duplicate) motherboard to replace the old one in the XP machine and with the hard drive with Windows 7 on it there shouldn't be any problems. With Windows 10 due out in July, I would install a clean new Hard Drive in the HP p6750f Pc.

Now does that sound too difficult?

 

seems like it should work, I know that you could take the xp disk and have it as an external disk with the win 7 pc,

I would just try it and see, I have no hardware experience to say whether this setup is okay or not, maybe one of the others here will jump in with some suggestions.