Windows update bricked my bios ?? Thought to be impossible ?

Hi Matthew,

Thank you for writing to Microsoft Community Forums.

We'd like to get more information regarding the issue.

1. Are you able to sign in Windows?

2. Once you sign in, does the display remains same as it is in the screen shot?

We would suggest you to follow steps mentioned below and check if it helps.

1. Unplug all external devices except for keyboard and mouse.

2. Load BIOS settings to default.

3. Then try to boot the computer.

Disclaimer: Modifying BIOS/ complementary metal oxide semiconductor (CMOS) settings incorrectly can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems resulting from the configuring of BIOS/CMOS settings can be solved. Modifications of the settings are at your own risk. 

Looking forward to your response.

Manjunath H

Microsoft Community – Moderator

(Start Quote) 

pc it had a blue windows update screen taking up the center,  60% of the screen in blue 40% background black on the update screen it was requesting the password to administrator account (i was already suspicious at this point about the update) 

• (( this is where the image shown appeared on my monitor  )) 

I decided to ignore the update until i was finished cleaning then i notice the pc screen go to no signal ( not to sleep as i had only moved the mouse a moment before to clean the desk/mouse mat ) a minute later the pc shuts down and stays shut down     (End Quote )

the motherboard then died after the update it shut the system down the motherboard is now bricked it will not reach post it will not output any error codes only when ram is non-populated 

i have only found this error online with this motherboard specifically when bios has been incorrectly flashed 

I in no way flashed my bios as I have no need nor intention to do so where as just previously to this update screen the motherboard was working perfectly 

currently the system ( psu replaced ram replaced with known working units ) 

motherboard will not post will not output display over dedicated graphics nor discrete onboard graphics hdmi dvi and vga , usb powers up until bios begins to load Eg. 

( power button pressed mouse led powers on then turns off after 2 seconds of illumination ) 

then system fails to post completely attempts reboot then stays powered on until user forced shutdown/ power disconnect 

clearing cmos 

systems attempts post restarts within 5 seconds of user pressing power button attempts to post for 5 seconds again then restarts( im presuming the motherboard is finding an error and bypassing it for next post attempt  ) on the 3rd post attempt system will remain on for 40 - 50 seconds then restart for the 4th time on this post the system will not complete post and no errors have been shown by system speaker and or buzzer ( separate pins and outputs for each)  cmos has been cleared and the same results happened with graphics card uninstalled 

power supply has been tested on another system for 24 hours and shown no issues or tolerance issues 

so no my pc does not get to the login page it does not even post since this update appeared on my system when the update had no user input for a few minutes it disabled the monitor and 1 - 2 minutes of the screen losing signal later the system shut down completely when i attempted to start the system after what i thought was a failed update the bios was now completely corrupted 

the disclaimer you have posted is also not relevant in this case as i did not initiate any modification of my systems bios configuration 

Hi Matthew,

Thank you for your response.

It seems BIOS is not updated, so in this case we would suggest you to get in touch with manufacturer of motherboard and update BIOS.

Hope it helps.

Let us know if you got the help you needed by clicking Yes or No.

Manjunath H

Microsoft Community – Moderator