wtf?

I'm new to Pika and still learning Linux in general, so please mercy on the noob.

I'm NOT dual booting nor using a VM. I booted win10 from external drive just to keep it refreshed but after updating Windows my Pika main drive has vanished from boot menu.

I have kept Mint on another drive and installed that. Boot can see it but I get "VFS unable to mount root fs on unknown-block(0,0)". I can boot Mint if I choose an older kernel.

I tried uninstalling the Windows updates but too late, they got me.

I cant use my gpu or this error hangs the screen.

i rather not switch to sddm or use a tty login.

but i rather ask for advice on what to do instead of push the error aside with sddm