MacBook won't boot up -- fails towards the end of the progress bar
MacBook was working fine. Left in sleep mode and now it won't boot up. I've been trying all morning. Tried starting it in recovery, resetting the PRAM and SMC and nothing. It switches on with the power button but towards the end of the progress bar it just switches off.
What else can I try? In lockdown it's not like I can take it to an expert.
If it's of any consequence, there's a DVD in the optical drive.
MacBook, macOS 10.13