!rant

I had that installation of windows 3 to 4 years now.
I'm using a third party software for backup so everyday at 23:00 the backup service starts. The image is stored on a second HDD.
First i want to point out that i set up the windows maintenance around that time too. So any updates should occur then and i remember finding my PC at login screen couple of times meaning a restart had taken place.
Everything was fine all this time.
Couple of days ago i returned home late around 2 am to find a blue screen saying that the computer did not boot property the last time. Had two options, just restart or try to fix.
Of course i will fix it, come on.
Everything failed. Everything. Even safe mode won't boot.
Who cares i have the back up system image. Boot from the bootable usb stick and restore. Well nothing is happening. It's just freezing at 5%. Cancel. Try again. Cancel. Verify the image. Success! Try again! Nothing.
Damn. Im really tired, off to bed.
Woke up tried fixing and restore but to no avail.
Fuck it i will just install Windows fresh. I was set up after an hour or so installed the necessary drivers and such. Let's see that image of any file i want to get back.
Image is corrupted. What the fuck? How? Damn it. Mount and recovery also failed.

That's it. I did not lose any important files. I save everything on a different drive and also the backup.
But I'm wondering what had gone wrong.
My guess windows rebooted when the backup was running. If that's the case shouldn't be a check if such service is running?