It does not start?
Here are some options
Is it starting and your seeing the blinking? Not starting and you have the blinking?
I have had many updates and Thursday is the normal update day where I have had to wait quite a while( depending on the computer speed) and just wait it out. The flashing is the hard drive icon and it is busy doing whatever. Rebooting etc can only create more issues. I have had to wait and hour before to let it finish doing what it wants. Not fun waiting but better than having corruption and the pc not being able to reboot. Then you headed to a shop for help. As long as its boots in your in a better place.
If you want a call I can but the answer is the same.
You quite welcome. Just trying to save you money and grief.
The hard drive image is usually stacked circles.
Just checking in