I have a MacBook Pro 13-Inch Late 2011 (MacbookPro 8,1) with Bootcamp installed.I have been using Mac OS High Sierra and Windows 10. Once When I boot into Windows 10, an error shows up 'No Bootable Device — Insert Boot Disk and Press Any Key'. Then I have tried to change the startup disk, enter into recovery mode, safe mode, inserted Mac OS bootable disk ,Windows bootable disk. Nothing worked and I have even removed the Hard disk.Still stuck on the same error. I can't do anything on my MBP. I have tried all the startup key combinations and none of that worked with both inbuilt keyboard and external keyboard.
I would like to fix this MBP but Holding option key for changing startup disk or holding other key combination for Recovery doesn't work on internal keyboard or external keyboard.
What are the next steps to fix this?