I solved the problem by putting a flash with ubuntu in priority of boot sequence. I installed Ubuntu and solved the problema.
Hello, this morning i was setting my BIOS to make dual boot on my Dell but I accidentally clicked on restore settings in boot sequence. Now when I turn my laptop on, it automatically turns on and off so that I only see screen with dell logo. Since my computer was unloaded I managed to open bios: in boot sequence there was only "UEFI toshiba..."; I tought that adding "Windows Boot Manager" could solve my problem but it continues. What can I do? I found this discussion ([URL] but I'm not sure it is my same problem and I'm afraid to touch hardware. Can anyone help me?
Inspiron 14 5000 automatically turns on and off (help me)