11-05-2012 11:47 AM - edited 10-31-2013 08:19 AM
It depends on how old the computer is.
Due to the extensive hardware and firmware changes in Windows 8 or 8.1 requirements, it is not a recommended update for all computers.
Having that said, the rule of thumb is that the newer the computer is, the more likely HP is to support it with Windows 8 or Windows 8.1.
Please visit the following websites for more information: