Originally Posted by anasttin
Then I go into 'Administrative tools', then 'Computer Management' then 'Disk Management'. Then I right-click the unknown Disk drive (which is the USB drive), and select 'initialize' as it says it's not initialized. I select 'MBR' for Master Boot Record, then hit 'ok' but it says 'The Device is not ready' and that's as far as I get.
This may be a shot in the dark, but do the same thing as you did before only
this time select "GPT" instead of MBR. if you get an error, try MBR again and it might work.