My Windows 8.1 Lenovo PC will not boot correctly after update?

I have a Windows 8.1 Lenovo brand PC. It recently prompted me to update so I did, and now when I try to startup the PC, it says Lenovo for about 5 seconds and then the PC turns off EVERY SINGLE TIME! I got it to somewhat boot where it told me it couldn't boot correctly and then gave me about 5 options which included Recovery Disc, Startup Repair,(etc.). What could have caused this and how can I fix it? Keep in mind that I can't even get as far as the login screen.

That's why you don't update your computer

IT WAS A DJWKSJSJSJZMSKZNSNSNSNENWB -ERROR 19: LAME QUESTION

You might want to check on the Lenovo website/forum for other people using that specific model, if they face the same issue. It may be some obscure bug in the particular update with hardware incompatibility - since windows run off so many hardware combinations, it is impossible for Microsoft to guarantee perfect working condition for all possible setups.

Try to run a startup repair or a revert to last known working state, if the options are available to you. These options do not cause loss of data. If you are partially savvy, you can make a second windows boot using the windows disc that came with the laptop. Since you do not destroy the previous installation, you will have all your data locked in the boot 1 of windows. There are tricks that can grant you access to your data. Then you should back it up and do a clean re-install of windows. Wiping everything and facing data loss should not be an necessary option, unless you want an easy way out.