I'm new to Linux and I was trying to set up dual boot on my Lenovo Thinkpad Edge E430 by installing Ubuntu. I already have Windows 10.
For the installation I prepared a bootable DVD with Ubuntu MATE but it didn't boot at first. Then, I entered into the BIOS via windows 10 mode and I set up my boot on legacy mode (my mistake here). After doing that, the DVD was available in the startup menu and I was able to install Ubuntu.
After I installed ubuntu I was not able to get back to Windows 10 because my laptop is still in legacy mode. But the real problem here is that I can't repair this situation because I'm not able to get back to BIOS. I tried several times all the methods on Lenovo to interrupt the startup and enter the BIOS and change my boot mode back to UEFI but nothing worked.
How can I get into it?