HP 2000-2d27CL cannot boot, powered screen but blank

[KBDeng]

Hello All,

I have been through the boards and I have tried almost everything and yet the HP 2000 laptop I am trying to fix just can't boot.  The issue started because there were some shutdown probelms with the computer.  I decided to upgrade the bios and that is when it stoped working.  I successfuly installed bios f.49 and I can see it in the diagnostic menu.  The only menu I am able to bring up is the bios and the disgnostic menu.  Everything else from the recovery partition to the boot drive, including a linux usb and a windows bootable installer wont boot.  I have even tried to turn of secure boot and tried to boot off legacy mode.  Still no boot.  I have tried rolling back the bios but it won't let me.  The only thing I can do is update the bios again which I have several more times.  All bios updates are successfull, yet it still cannot boot.  In the bios menu, I look at the system menu and have an 0021 along with a time stamp but I am confused as to what that means because I can't seem to google what it means.  HD has been removed and tested, and I am about to switch the ram just to make sure, but I figured I'd post here and see if anyone has any advice on things I have not tried.  I have done almost everything from reseating the ram, to a hard reset, to Windows B, to try and rectifiy this but still have no luck.  Any help would be appreciated.

Thanks

KB

[Riddle_Decipher]

@KBDeng

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[KBDeng · Accepted solution]

I ended up getting a new motherboard instead.  New motherboard is at stock firmware and while there still some power issues with this model, I am not risking another bios update. 

[Riddle_Decipher]

@KBDeng

Thank you for responding,

I'm glad you got the issue fixed,

If you have any other concerns or queries, do not hesitate to ask as we'll be glad to help,

And have a good day ahead.

Stay blessed!