Hi my name is ***** ***** I will be the expert working with you today to help and resolve the problem you have posted.
I am sorry to know that you are facing problem with your computer.
What have you tried so far as its spinning forever and not booting.
its a desktop or a laptop?
Please remember when we dealing with your issue. It is quite possible and may take more than one step or answer multiple times to solve a problem. In case the answer provided does not help or work dont be dissatisfied, use the Reply to expert or click on the “Continue Conversation” button and I will be happy to continue to help.
My name is***** will help you to the best of my ability. What we need to do is a hard reset/shut down, hold down the power button and then hit F8 during boot. This should bring up, a previous restore menu, select the day before the update and you should be running like you were.