Seems this thread didn't go anywhere. I just started to experience the same problem with a similar product:
HP Envy TouchSmart 15-j002eo
Product number: E1S10EA#UUW
Had Win 8 Home premium (Swedish) at delivery, updated to Win 8.1 a couple of weeks after becoming available, meaning this upgrade is probably not related since that was long before the pop-up started.
I have seen references to this being related to the software for the fingerprint reader, could that be?
Best,
K