The HP usb bios recovery does work. Keep trying! I had the same problem with 2 different laptops. What ended up working was using a usb 2.0 drive (i don't know if this is the cause) and keep holding the windows and B keys for more than a minute.Maybe hold it for several minutes. Nothing happens on the screen. Then I came across this:

[FONT=Arial][SIZE=14px][COLOR=black]"If the HP BIOS Update screen is not displayed, press and release the power button, and then immediately press the Windows + b keys at the same time, repeatedly, until the computer beeps or opens the HP BIOS Update...

Hi, I'm having a problem signing up for the forum Teknisi Indonesia. The captcha asks "what's the president of Indonesia" but it keeps saying captcha failed. From a google search I've tried [B]Prabowo Subianto [/B] and [B]Prabowo Subianto Djojohadikusumo[/B]​ and neither works.Hi, I'm having a problem signing up for the forum Teknisi Indonesia. The captcha asks "what's the president of Indonesia" but it keeps saying captcha failed. From a google search I've tried [B]Prabowo Subianto [/B] and [B]Prabowo Subianto Djojohadikusumo[/B]​ and neither works.Hi, I'm having a problem

Changing the audio jack made no difference. Exact same issue as OP. This must be a firmware issue because mine makes the startup chime Everytime and the sound is perfect. Not muffled.

I have the same problem with this model. Replacing the audio jack codec (u6300) didn't change anything.