Windows 10: can i restore the oem version of windows 10 with changing the product key?

I have an HP laptop with windows 10 home single language digital license OEM version. It was recently serviced with its motherboard repaired and SSD replaced. The vendor then installed windows 10 pro volume version but it is not able to activate and upon troubleshooting it is asking to install windows home version. I am currently thinking to change the product key to the oem key and reinstall windows 10 home. Is it a safe way? or should i try an alternate method? please suggest

:)

 

my windows 10 oem didn't come with a product key

LOL yes they do. Legit OEM copies DO come with a key - on a sticker that you affix to the case. OEM and SLP (System Locked Preactivation) are NOT the same thing. SLP is what large OEMs like Dell, HP, etc do, where every system came out of the factory activated with the same "Manufacturer's Master" key in XP, Vista, and 7. Reinstalling with the factory image preserves this activation. However if you dig that key out with Magical Jellybean and try to do a clean install with it, activation will fail. That's why every machine that came out of a factory ALSO had a COA with a unique key. That is what you need to use for a clean install. Starting with 8, large OEMs began embedding the unique key into the BIOS, which is why they no longer come with a unique key sticker. However, you can still buy legit OEM versions of every version (the ones that small shops would use for their custom machines) - including 10 - which come with the sticker with a unique key.

The only differences between OEM and Retail versions is that the OEM version locks to the first motherboard it is activated on, while Retail can be moved to a different one. OEM also come with no support.

 

my windows 10 oem didn't come with a product key

Dude, go to Newegg right now and read the questions and answers tab on Windows 10 OEM. The OEM copies that are listed there DO in fact, come on an optical disc. The flash drive ONLY comes on Retail copies.

 

my windows 10 oem didn't come with a product key

indeed OEM's have embedded keys a OEM upgrade is for machines with OEM copies and DO NOT COME WITH A KEY! sadly many vendors confuse the two because pre-windows 10 'OEM" came with a key
a end user should always buy a Retail OR "System builder OEM" copy when it comes to windows 10 system builder is not `OEM` you can blame microsoft for the retarded terminology screw up

it sounds like the op bought a pirated copy with no key microsoft does not ship windows 10 on optical disks .... they use flash drives