How to restore a Linux virtual machine?

Question

linux

Today, the Debian virtual machine stopped starting, apparently due to the fact that it was hard shut down.
This is what is displayed on the screen:

[ 0.017798] Spectre V2 : LFENCE not serializing. Switching to generic retpoline
[ 0.756189] piix4_smbus 0000:00:07.3: SMBus base address uninitialized - upgrade BIOS or use force_addr=0xaddr

Can you please tell me if there is something that can be done here?
The server is very important, it is on Hyper-V, there is a backup of the machine, but it is quite old

Answer 1

these lines are not related to the breakdown.
go into recovery drive fschk. at first.
Then, through the recovery console, look at what's wrong with the system.
as an option, connect the Debian CD to the virtual machine, boot from it and make a backup of the files or copy the necessary files to your reserve

Answer 2

An eye crying in the desert...
An eye stretched over a known place after the server crashed in the absence of backups...
Install another server, mount the disk from the first one and transfer the data. And if you survive after prevention from the management - the rule of having a backup always and everywhere will be remembered well :)