Bios update causes screen flashing and black screen

[nivedha]

Two months before my laptop was flashing. I approached a service center and changed my OS, Motherboard and Display of my laptop. Till Yesterday morning, my laptop was working great. When I switched on the system, the bios update has been done automatically. After that my laptop started misbehaving vigorously. The screen started flashing, flickering also causing vertical lines. Even, I could not login to my laptop properly. When I switch on It remains as a black screen or keep on flashing. Everything was fine before BIOS update and started misbehaving after BIOS update.

[Riddle_Decipher]

@nivedha Oh! that may need a BIOS recovery, a possible interruption, not deliberate, however, a power failure or a slight disconnection from the internet while downloading the BIOS update, could cause such issues, nevertheless, we have a few steps that should help resolve the issue, once and for all:

Click here to perform a hard reset on your device

If the issue persists, after the above steps, try the below:

1. Turn off the notebook.

2. Plug the notebook into a power source using the power adapter.

3. With the notebook off, press and hold the Windows logo key  and the B key at the same time.

      NOTE:

   On some notebook models, it might be necessary to press and hold the Windows logo key  and the V key.

4. While pressing those keys, press and hold the Power button on the computer for 2 to 3 seconds, and then release the Power button but continue to hold the Windows logo key  and the B or V key until the HP BIOS update screen displays or you hear a beeping sound (usually 8 beeps).

   The HP BIOS Update screen displays, and the BIOS update begins automatically. This might take several minutes, and you might hear additional beeping sounds.

   • If the HP BIOS Update screen does not display, repeat the previous steps. If the issue persists after repeating the steps, skip to the next step to Download a replacement BIOS file.

   • If the Power light turns off, the notebook has turned off because the Power button was held too long. Repeat the previous steps, making sure to hold the Power button for 2 to 3 seconds only.

CLICK HERE FOR MORE STEPS AND INSTRUCTIONS.

(By the end of this article all the issues should be resolved)

P.S: Welcome to HP Community 😉

Let me know how that pans out,

If you feel I was helpful, simply click on Accept as Solution to help the community grow,

That said, I will have someone follow-up on this to ensure you've been helped,

Just in case you don't get back to us, 

have a good day, ahead.

[nivedha]

Still the issue persists.

[Echo_Lake]

@nivedha

Thank you for posting back. 

I have a few more troubleshooting steps we could try to fix the issue:  

Firstly, perform Windows Update and HP Support Assistant: (do not skip any troubleshooting steps if you feel steps are repeating) 

To check for updates now, select the Start button, and then go to Settings  > Update & security  > Windows Update, and select Check for updates.

Install updates from HP Support Assistant: Go to Download HP Support Assistant to install the tool.

1. To open HP Support Assistant, double-click the HP Support Assistant icon .
2. Click My devices in the top menu, and then click Updates in the My PC or My notebook pane.
3. Click Check for updates and messages to scan for new updates.
4. Review the list of updates. Updates with a yellow information icon are recommended. Updates with a blue information icon are optional.
5. Click the update name for a description, version number, and file size.
6. Select the box next to any updates you want to install, and then click Download and install.

Hope this helps! Keep me posted for further assistance.
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.

[nivedha]

No changes..Still the issue persists

[Echo_Lake]

@nivedha
Thank you for posting back. 

Since you have already tried most of the troubleshooting steps to resolve this issue,
I would request you to contact our Support and our Support Engineers should be able to sort this out. HP Support can be reached by clicking on the following link:  www.hp.com/contacthp/

Please feel free to contact us here anytime you need any further assistance. Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.