Thanks for your continuing help. I would like to to try "Legacy," but am not sure how.
I press F2 at the beginning. This takes me to tabs including "Main", "Devices", "Boot". Under "Devices," there is a box under the heading "USB Configuration" for "Legacy", which I have checked with a mouse-click. Below that are choices involving charging, which do not seem relevant. The "Boot" tab is more problematic. I am shown panels headed "UEFI Boot Priority" and "Legacy Boot Priority," each headed by a box to check. UEFI is checked, Legacy is not. I am unable to uncheck UEFI or to check Legacy, either with a mouse or by moving around orange frames using the arrow keys. -- My e-mail is unreliable. Please try again if no reply in several days. gpg: F7C9 B577 1E5D C732 63F1 A9D2 A399 D202 50E8 50D1
