I got a used Acer Aspire Switch 10 (SW5-012). The device does not load windows and says boot disk cannot be found. I've tried to load via a bootable USB by disabling secure boot to no avail. What I noticed is that F12 boot option is empty when loaded. Does not even show a hard drive or USB drive. In the Boot section, I cannot locate Windows Boot Manager as well. I was told to update the BIOS. But Acer website only provides .exe files and also I don't know how to update went the USB drive is not detected. Also, the Keyboard and the touch pad works. So that rules out the problem of connection between the two parts. Please let me know what I can get this to fix.