So at the factory they install the OS from an image that has a generic product key. Then does someone then individually enter the COA product key (from the sticker) at the factory or does Microsoft just allow activation of the manufacturer's generic product key? Since the COA is nowhere to be found in the registry I'm guessing that the COA is never entered at the factory. The sticker is put on there only if someone needs to reinstall.
Your keyfinder would have found the SLP key. You have already wiped out the old install so you cannot use a program to backup the activation. I like
Advanced Tokens Manager.
The big OEMs use SLP (System Locked Pre-installation) keys and SLIC (Software licensing description table) information in the bios to activate their OS. Say its a Win 7 Pro. Their image would have their SLP key, and the OEM Cert license file for that OEM/OS. The Windows install will compare the BIOS information to the license file and it if matches it will activate the OS with the SLP key.
The key on the COA is only used if it is system builder pack, or the customer/someone reinstalls the OS with the COA key.
When the manufacturer sends you a replacement "recovery disc" does it usually include a valid Windows product key with none of this validation hassle?
When you get an OS disk from the OEM ("Dell Windows 7 64bit Reinstallation Disc"), it is setup to use the SLP key and to install the OEM certificate. Then after you go through the OOBE it will already be activated. Other then that bit, and the OEM information/logo it is pretty much identical to a normal OEM disc.
You could just call the automated system and activate that way, or you can install the license file for that OEM and insert the SLP key. People would call this grey but it works.
If you didn't backup the OEM cert from the install, you can find those online. Use an admin command prompt to install it
Code:
slmgr /ilc licensefilename.xrm-ms
Then the SLP key
Code:
slmgr /ipk XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
Then check the system properties and it should say that it is Activated.