On ENVY 13 laptop having power down / on with blank screen after Battery replacement

[nCtt3]

Just completed battery and power port replacement on Envy 13 laptop. I opened it up screen displayed date time correct ... did not try to log on, all seem fine. Pressed power button to shut off and closed top. Fans continued to run, power light remained on but screen went blank. After a power reset for unremovable battery there was no change until about an hour later and heard beep, power port light begin to blink on and off. Plug cord in and pressed power button, screen reappeared with correct time and date. Computer entered sleep mode with screen going blank powered off.  About 30 minutes later opened top but did not come on ... pressed power button with no response. Power button blinking on and off as was the power light. The power port light was amber when cord in but off when cord out. Any help appreciated.

[Dilip_18]

 Hi@nCtt3,​​​​​​

Welcome to the HP Support Community! I'd like to help!

I see you are experiencing issues with the HP Envy Notebook not booting to windows just goes to a black screen.  

The BIOS can be corrupted during normal operation from a failed BIOS upgrade, or damage from a virus.   

Try Perform a hard reset HP Notebook PCs - Performing a Hard Reset or Forced Reset

Recover the BIOS using a key press combination.

Turn off the computer. Press and hold the Windows + b keys, and continue to press those keys while you press and hold the power button for 2 to 3 seconds. Release the power button, but continue pressing the Windows + b keys.

The power light remains on, and the screen remains blank for about 40 seconds before anything is displayed. You might hear a series of beeps (usually 8 beeps). Eventually, an HP BIOS Update screen is displayed and the BIOS update begins automatically.   

NOTE: 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 screen.

After the BIOS is recovered, a Continue Startup button is displayed and a timer counts down. Click the Continue Startup button to restart the computer immediately, or wait for the computer to restart automatically when the timer reaches zero.

If issue still persist then run diagnostics to rule out other hard drive issues

1. Start or restart the computer.
2. Press F2 repeatedly during start up to enter the HP PC Hardware Diagnostics UEFI utility.
3. Select Component Tests > Hard Drive > Quick Test.
4. Click Run Once.

Once the test completes, results are displayed on the screen.

If the drive passes all tests, continue to restore a computer back to the factory default, which will isolate whether it’s a software or hardware issue. 

The HP Cloud Recovery Tool allows you to download recovery software to a USB drive. You can use the downloaded recovery image file in order to install the Windows operating system. 

Click here for the HP Cloud Recovery Tool (Windows 10) link.

Hope this helps! Keep me posted. 

Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.
Click on the YES button to reply that the response was helpful and/or to say “Thank You”.

Have a great day!