Windows 10: Trying to install Windows 10 on an old HP Elitebook 8540w (2010) - any tips?

So, I'm trying to revive an old HP Elitebook 8540w notebook that had a harddisk failure.
The problem is that I can't seem to get the Windows setup to start, neither from a flash drive nor an SD card:
I used the Windows Media Creation Tool to create a bootable flash drive and tested it successfully on a different PC, but on the HP it's just not showing up as a bootable drive. Tried different USB ports, double checked the boot sequence in the BIOS - nothing, it just won't work.
Then I used the Media Creation Tool again on an SD card and put that in the elitebook's card reader and it's showing up as a bootable drive, but instead of the Windows setup starting, the elitebook is just rebooting.

The only thing I didn't try yet is booting from the DVD drive, but I don't have any DVD dual layer blanks lying around - would it be worth a try to get some?
Could this be a UEFI vs. BIOS problem? The elitebook has a BIOS option called 'UEFI boot mode' that is disabled by default and marked as for development purposes only. I tried both start media with the option on and off without success.

submitted by /u/Sonar_Tax_Law
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:)

 

HP EliteBook 8540w Device Drivers

Re-download the Windows 7 drivers for it from HP.

HP EliteBook 8540w Mobile Workstation - Driver Downloads | HP ...

Cheers.

 

HP EliteBook 8540w Device Drivers

I tried...... still the same problem. which specific driver should I download ?

thanks in advance..

 

HP EliteBook 8540w Device Drivers

I re-installed Windows 7 SP1 in my HP EliteBook 8540w. Now facing the following issues.

1-Unable to connect windows update.

2- PCI Serial Port

PCI Simple Communications Controller

Unknown device

Drivers Missing. could some kind souls plse help ?