Method 3: Check for Viruses and Malware.Method 2: Using the Power, Function (Fn), and F5 Keys.Method 1: Power Reset the Toshiba Device.I am writing now so that I can hear any ideas others might have for the time when I can get to this machine again.
The only avenue I have not pursued is updating the firmware. My time ran out to play with this machine, so I taught the user how to switch between the two in the firmware, which is listed as InsydeH2O Rev 3.7. So here we have successfully proved that it is something with UEFI because this is the exact same system that was working before with legacy Grub. I clicked on it, and the same locked up condition happened! I'm sure you have all met with this kind of disappointment before. Of course, it wasn't booting Windows, but Boot-Repair will help, right? So Grub shows up with the Linux Mint in the standard UEFI mode. Sudo mv /boot/efi/EFI/Boot/grub圆4.efi /boot/efi/EFI/Boot/boot圆4.efiThen I found Windows still booted normally, so I had to change the same files in a Windows directory on the same /dev/sda2. Sudo mv /boot/efi/EFI/Boot/boot圆4.efi /boot/efi/EFI/Boot/boot圆4.efi.backup Sudo cp /boot/efi/EFI/ubuntu/* /boot/efi/EFI/boot/ Sudo cp /boot/efi/ubuntu/* /boot/efi/boot/ By the way, my results from a scan of the system are at It gives an error that the system is not in Legacy mode and please boot into UEFI mode first. Even if this were the problem, why would it not be a problem in CSM mode? (a.k.a Legacy boot mode)īoot-repair is impossible to use unless you can get the system to boot into UEFI first. They will, however, boot with no problems in CSM mode, as opposed to UEFI mode.įor a while I thought it was a graphics problem, but I tried everything I could think of: noacpi acpi=off nomodeset xforcevesa. freeze, no alt-f2, no REISUB, no Num Lock, caps lock, whatever) I have tried all from USB and at least 4 from LiveCD They will all show their Grub splash screens, then about two seconds after will lock up. I tried many distributions: Ubuntu 14.04, Linux Mint Rebecca, three version of Boot-repair disk, Manjaro, Parted Magic, rEFInd. This Toshiba Satellite C855D-S5100 will not boot anything linux UEFI.
I have dealt with a problem that even Rodsbooks, Oldfred and Yannubuntu, the UEFI legends, have written nothing on. I hate to post as I find it very effective to search for answers to problems within what is already written.
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