Today I bought a used HP laptop computer, model HP Pavilion DV7-4120EM . At first everything worked ok. Then I used HP center software to search and install BIOS and driver updates. After it has finished installing, I wanted to turn the computer off and call it a day.
Computer screen then went black, but computer didn't turn off. The fan can still be heard, and little indicator lights on F11 and F12 are on ( they won't turn off if I click them, nor will Caps Lock light turn on ). I have pulled the power cord out in hope of computer running out of power. Trying to press or press and hold the power button doesn't have any effect. The bottom surface is warm, as if the laptop was being used normally. It's been in state like that for at least an hour now, and as I am writing this it still is. I just can't turn it off or do anything, the screen is black, and it is running ( or at least the fan is heard ).
What do you recommend me to do about it ? Thank you.