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You can always contact HP Support to check on the validity of the driver. If you downloaded it from HP.com, then give them that feedback via email and see if they update the certificate. The only other way to get the thing to print would be to force install a generic printer driver and hope that it works...My guess though, it wont.
Humans are the only creatures that won't live up to the their potential. Give everything your all. When you die, die on E.
So I ask you, what do you intend to do now?