|You said the system runs factory new now. Does that mean your wiped the drive and did a factory restore? If so the HP battery monitoring software on the hard drive would not be messed up by the virus. |
I have had brand new batteries from HP go bad before, it's possible you got one that is bad out of the box. Can you send it back for a new one?
If you go to the drivers section on HP's webite, they have battery diagnostics software you can download. You might give that a try and see what it reports. Make sure you do the advanced test.