Windows 10: Blank screen after enabling secure boot

First i switched from MBR to GPT and tried booting my computer it worked fine. Then i turned off CSM and turned on secure boot asked me to change something with the PK key which i did it was the pk management key i believe it said successful i restarted my pc to find nothing on the screen. took out the cmos battery for 5 minutes tried booting up using HDMI on the motherboard that did not work. tried taking out the GPU and running just off the motherboard but that did not work either.

:)

 

Black screen after secure boot enable

Hi and thanks for reaching out. My name is Bernard a Windows fan like you. I'll be happy to help you out today.

I understand the issue you have, there is nothing to worry I am here to help, this is happening due to misconfiguration on the BIOS, I suggest resetting the BIOS to default settings and enabling the secure boot again.

Reference: https://forums.tomshardware.com/threads/blank-s...

To reset the BIOS you may also check the steps from here: How to Reset the BIOS on a Windows PC: 3 Easy Methods

Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

Let me know how it goes and I hope that helps.

Bernard

 

Secure boot violation after update and blank screen

Hi, my laptop (ASUS TP550L running Windows 10) updated last night, and when I turned it on this morning the screen immediately displayed a Secure Boot Violation message (invalid signature detected. Check secure boot policy in setup) - clicking ok sent
me to BIOS. Looking online told me to disable the secure boot control, but doing so resulted in the computer going to a blank screen and not doing anything despite my waiting for about three hours. So I re-enabled the secure boot control and am back to the
secure boot violation message. I'm not sure what my options are - if a reset is plssible, what I'd lose, if anything, or if I have another source to boot from given that I don't have a CD or USB to do it from - so I'd appreciate any help or suggestions.

 

Windows booting to blank screen after safe mode

Click these keys whenever you see a black screen:
Windows logo key + Ctrl + Shift + B > report what you see and hear

See if you can boot to the BIOS using the information in this link:
List of PC brands with their corresponding hot-keys

List the installed antivirus software.



See this link for additional troubleshooting steps:
https://support.microsoft.com/en-us/...-screen-errors