I've also had no problem with the telephone validation.
Some of our desktops are like granddad's axe! As long as you use the same case you'll be right
What is the difference between RETAIL and OEM Windows license:
- OEM versions of Windows 7 are identical to Full License Retail versions except for the following:
- OEM versions do not offer any free Microsoft direct support from Microsoft support personnel
- OEM licenses are tied to the very first computer you install and activate it on
- OEM versions allow all hardware upgrades except for an upgrade to a different model motherboard
- OEM versions cannot be used to directly upgrade from an older Windows operating system
With a retail version, you can transfer it to another computer, change your motherboard.
- OEM is one time install. if you try to install it on another computer you cant register it because they see its a different motherboard. Retail you can call them up and change the key over to another motherboard 5 times.
- OEM if your motherboard dies and you cant find the same one to replace it you need to rebuy windows. upgrading anything else is fine though.
Software-wise, OEM Windows 7 are identical to Retail versions. The only differences are of legal nature:
- OEM is locked to one computer, although the only component checked is the motherboard - you can change other components at will. I'm not completely sure, but after replacing the motherboard (e.g. when it fails and you get RMA for the exact same model) you might need to reactivate the system by phone.
- OEM does not come with free Microsoft direct support
- OEM is locked to the computer it is bought with (technically you can activate it on any other computer but that's against the purchase agreement, so from legal standpoint it is no different from installing a pirated version)
- OEM cannot be directly upgraded from an older version of Windows OS (if you are using Windows XP it is not an issue, because it is technically impossible to upgrade from XP to 7, you have to make a new, clean installation. Same applies to process of switching from 32-bit to 64-bit OS).
So there are your answer's there. If you upgrade from Windows 7 or 8 to Windows 10 and its OEM you cannot change the motherboard. If you buy Windows 10 from newegg OEM for $109, again you cannot change the motherboard.
It is technically possible to upgrade an oem version of windows xp to windows 10. You would upgrade to vista, then upgrade to windows 7 then to windows 10 provided your hardware can support it.
I know some about a lot of things, but not everything about something. Isn't the motherboard ID'd by the BIOS string? If so, are we transmitting that ?
So when your hardware changes, so too does the hash.
Well it is number of factors. My motherboard was replace under warranty by Dell and I had no problems with activation. I was sent a dell re-installation disk (Dell support sent me one earlier in the year for another problem.) I had no problems with dell re-installation disk either (Before & After the Motherboard Replacement). My system is Dell oemslp pre-activated system. I might have an issue with the windows 10 upgrade which I may need to use the key on the back of my computer but I decided not to upgrade to windows 10 even though it is a free upgrade.
I would recommend to do a "fresh" install. This will cleanup wasted space and get most people to do a most likely long awaited backup of their data. Another plus is a "fresh" install is less prone to bugs and glitches from old files and updates that don't get updated or removed.