Laptop continuously Beeping on Startup and brightness lowers automatically (HP ENVY Sleekbook 6)

[ArefinMizan]

Hi, 

My Laptop starts beeping continuously on startup....and I mean continuously (I haven't found any beep codes on the website matching with it), and then a black screen with system diagnostic option pops up. I have performed the check ups but it still keeps beeping on startup.

The laptop does boot successfully though, unlike the other problems I have found on this forum with similar issues, but it automatically lowers the brightness and I can't seem to change it, every time I up the brightness it automatically goes down instantly. 

Please help me with this. Thank you in advance.

[Riddle_Decipher · Accepted solution]

@ArefinMizan

Thank you for being a part of HP Forums. 

It'll be an honor to guide you through the steps needed to identify your concern and/or address your query 😉 

It could be a stuck key on your keyboard that's causing the beeps and the brightness to go low on its own, I recommend you connect an external keyboard (disable the internal keyboard using the device manager) and check if the issue persists... if it does and you are able to boot into windows, you could start with reinstalling the video card driver, using the below steps:

• Right-Click on the windows button, select device manager (after connecting the external keyboard),
• look for keyboards on the list, right click on Standard keyboard or PS/2 keyboard and select disable device.
• Then, check if the external keyboard works fine.

if the issue persists, only on the internal keyboard, when you restart the device with the external keyboard connected, you could be looking at a possible hardware malfunction, please check my private message for further instructions:

Please check your Private message icon on the upper right corner of your HP Forums profile 

Next, to your profile Name, you should see a little blue envelope, please click on it 

(The reason we are utilizing the private message now, is because the instructions are critical).

Let me know how that pans out

I will have a colleague follow-up on this to ensure it's taken care off,

as I need to know if the issue has been resolved, to get proper sleep at night.

feel free to give me a virtual high-five by clicking the 'Thumbs Up' icon,

followed by clicking on 'Accepted as Solution' as it would help the community gain more knowledge, and have a great day Ahead!

[ArefinMizan]

Thank you so much @Riddle_Decipher. Your Solution worked perfectly.

[Riddle_Decipher]

@ArefinMizan

Thank you for the update,

I appreciate your time and efforts, 

I'm glad I could contribute in identifying and leading you towards the solution.

Thanks for honoring us, with an accepted solution as it helps the community grow,

I must say, its been a genuine pleasure interacting with you,

You can always click the "Thumbs Up" button to give me a Kudos,

Take care and have an awesome week ahead.