I have a Dell laptop Vostro 3350. It has been working fine for 2 years
In the middle of a windows update, the laptop was turned off.
When started again, it had errors on update and stopped.
Rebooted a few times but it always failed at the same point.
Tried rebooting and using the system restore and repair options.
It did get past the initial error point, but failed again further on.
Now it doesn't boot at all, I get the error of needing to plug in a bootable device.