My aunt called me in to repair her desktop and laptop computers. (Level up! You become: The Family's Private IT.)
The desktop wasn't much; just many, many junk pieces of software that her daughter had put there.
The laptop, had a completely corrupted partition, with a nice BSOD when trying to start Windows. I had no choice but to reinstall Windows. My aunt had two discs lying around for some obscure reason. One was a Windows Xp Home Premium OEM installation disc in a paper pouch without any key, and the other, in those large cardboard packages they sold Windows Xp with, was a Windows Xp Professional disc and a product key, just like the real ones.
But not an installation disc. "Update" written on the disc. I thought maybe the computer started out with Home Premium and then the Professional "update" was used to upgrade it, but nope. The Professional disc, I guess, is for installing service packs or something. On whoever knows what computer. When asked, she swears no disc came with the computers, and she had no idea where these discs might come from.
Anyway, right now her computer has the Home Premium OEM I installed on it, without a key. "30 days remaining", blah blah.
This computer was a Dell. Was. She bought it at a place where they take broken computers, replace a few parts, and sell them refurbished. This means there is no Recovery partition. There wouldn't be much room for such a thing anyway, on this 60 GB hard drive.
So my only option is to find the right OEM disc and reinstall it with the key on the sticker under the computer. So I thought I was going to just download an ISO and burn it, but then I saw this.
Apparently, for Windows 8, there are tons of ISOs, and only one can do depending on the code in the BIOS.
This guide seemed to sort of indicate it's the same for Windows Xp, as they advise to check some numbers in the BIOS with a bootable USB key. If there was just one OEM, why would they care?
But searching, searching, searching, I just can't put my hands on a list of ISOs from which to choose. It's like there's only one ISO after all.
So, before I go to her home and try to install with a disc that won't work, please tell me there really is just one ISO, and that it won't go wrong. Or tell me where I can find the list to choose from.
Also, many ISOs say "SP3". Does a "Windows Xp Professional" license differ from a "Windows Xp Professional SP3" license? If so, how do I know what Service Pack (none, 1, 2 or 3) the product key on the tag is supposed to be?