WARNING! HOLD OFF ON UPDATING WINDOWS 10 RIGHT NOW (APR/MAY 2018) !!
I’m advising people to postpone updating Windows 10 to the April 1803 update. It is crashing a LOT of machines …and doing it in such a way that they are not recoverable apart from reinstalling Windows. Make sure all your documents are backed up, and if you have backup software make sure you have an image of your hard drive. If you want to know what build you have click on Settings gear icon by the bottom of the start menu, and type UPDATE in the search box at the top, and pull up the Windows Update settings page. Then look for the link that says “build info” , …should look like this:
After that, you should have this page:
If it still says 1709 you are good. If it says 1803 and your machine didn’t crash, EVEN BETTER!! 🙂 But if it says 1709, you may want to pause your updates for a while. Or at least make sure you have really good backups. …and if the worst already happened, give us a call. We can rebuilt it for you! 🙂 (and my sincerest sympathies to you)