Hello,
I upgraded my HP ProBook 4530s to Win 8.1 and install drivers from HP site but I still have two unkown devices.
Both have name Base System Device and are in PCI slot 2(PCI bus 36, device 0, function 0 and 3).
I also have a problem with turning off or putting notebook into a sleep mode. The monitor turns off but fan still works, lights are still on, but notebook will not turn off.
The last problem is with function buttons. Some works (sleep, sound controls, player controls) but some do not (brightness, lock).
Thank you for any advice.
Have a nice day!