My HP Pavilion DV6 6120us freezes during shut down. Windows looks like it goes through the shut down process and the screen goes black but the mousepad border light stays on and the wifi (f12) button goes orange. The only way to completely shut it down is to hold the power button for a few seconds. Once I start it up again, it says Windows wasn't shut down properly. After a few days of this, now the laptop battery isn't being detected.
I went into the BIOS and run the onboard memory test and hard drive test but both passed. I haven't done a reinstall of the Windows yet but with the battery issue now I am thinking it could be the motherboard but I'm hoping it's something else as it's out of warranty. I'm running Windows 7 Home SP1 64-bit edition.
I've seen a few posts on this board with the same symptoms but there never seems to be any solutions. Any help is appreciated.