Hi,
You might contact HP and ask them why it is not recognized as a boot device...
Or better yet, I would simply return it for a replacement, or exchange for a different brand...
Without knowing anything about the purchase and\or exchange\return policies I can't be real specific...
I have personally returned three SSD's that were not functioning, or performing properly...
Two at NewEgg and one at Amazon...
I had a bit of a problem with one of the returns to NewEgg in that they failed to tell me that they had to issue some type of a special return authorization, and not use the normal method... This caused quite a delay and confusion.
This was because the drive worked, but was not the drive it was claimed to be...
It was supposedly a 128GB model drive, and was labeled that way on the outside, but all internal specifications indicated it was a 120GB model... The company made both, and the performance was different between the two...
Just mentioning this as a tip as something to ask about first if doing a mail return..
NewEgg handles "Mislabeled Returns" differently than "Defective" returns, for instance...