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Asus T100T no boot options
I have an Asus T100TA tablet with Windows 10 installed. The admin password is forgotten so I decided to do a full OS reinstall.
Using a Windows Media Creation USB, I booted into the USB. I then used diskpart from the command line to clear the drives so I could get a completely clean install of the OS. I've done this with other laptops and usually gives me no problems.
In this case though, I then selected the unallocated space for installing the OS but got an error "windows cannot be installed in the selected location 0x80300001".
I then realised that this may be because the primary boot option was set to the USB stick. When I go back into the BIOS now, there are no boot options available at all (the boot menu is just empty) and I can't boot into anything other than the BIOS. There is another BIOS option of "Launch EFI Shell from filesystem device" which just gives an error "Not found".
I think I know the problem, or at least part of it:
Initially I couldn't boot into the USB and while troubleshooting, I set USB as default device. But only afterwards realised that I needed a 32bit USB and not 64bit. So I reformatted the USB and was able to load the media creation tool. I didn't revert the BIOS boot settings back to default.
Also when running diskpart and clearing the disk, it seems I also (stupidly) cleared the USB and potentially a system partition.
The error I got (0x80300001) might be related to the internal storage not being the primary boot device.
So went back into the BIOS and discovered there is no boot options. Set the BIOS settings (and after disabled secure boot) but still no boot options.
My USB is dead now. Another PC detects it but can't load anything from it. So I got another USB, formatted it with the Win Media Creation Tool and stuck it into the Asus T100T. It is not detected. I can only get into the BIOS and nothing else. No boot options available.
My problem now is figuring out how I can boot something on the device. Any suggestions? Or have I rendered this device redundant?