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No Boot after Windows Updated BIOS


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HP 15-Cd059sa (2YK85EA#ABU)

 

My hard drive failed so upgraded with a 240GB SSD.  I installed Windows 10 1709 with a USB stick made with HP Cloud Recovery.  Once installed the laptop did a few updates including a BIOS update which went fine.

 

The laptop did not offer Windows 10 20H2 so I ran the update manually which worked.  After a few restarts to install updates, it restarted for the last time and did a HP BIOS update as before but instead of rebooting into Windows, it rebooted into a DOS like environment to updates other parts of the BIOS, ending with the boot block.  When the laptop restarted all I got was a black screen and that is how it remains.

 

I've tried Windows + B and Windows + V but when turning on but makes no difference with or without a hard drive or BIOS recovery USB stick.

 

Can anyone offer any help to get it booting up properly again as I suspect the update on the boot block may have gone wrong so unrecoverable?

 

Also does anyone know if I can get a Super IO as I can solder a new one on the motherboard to save the cost of a new motherboard?

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