Grub doesn't load after Ubuntu restart

[mahesh]

Hello,

I'm dual-booting Windows 10 and Ubuntu on two different SSD. Everything works as it should when I turn on the computer, I get Grub and I can choose to boot between ubuntu or windows. However, if I connect to Ubuntu and do a reboot, the computer restarts but it does not load Grub anymore, it remains stuck on the screen where you can press F2 or DEL to enter the BIOS (the input does not work either). So I have to shut down the computer and turn it back on if I want Grub to reload. I tried with Ubuntu version 20.04 as well as version 21.10 and even the beta of 22.04. I have also tried to completely erase all my hard drives and install only Ubuntu but there is always the same problem on reboot. If I reboot from Windows it loads Grub correctly every time. Have you ever encountered a similar problem or have any idea what it could be?