how to fix pc after windows update reboot?

Have you tried plugging the monitor back into the computer? I've had to do that before, unplug then replug the monitor into the computer.

For those of you talking about System Restore and all that, apparently you didn't fully read the post. The monitor was blank. You cannot work on a blank monitor unless you know exactly where everything is and where to go without looking.

Sorry yet you have a corrupt Registry. touch Microsoft as matters with Updates are freed from fee. that's clearly you have a real replica of domicile windows. the only different fix is to reinstall. there's a batch document to repair the situation yet i attempted to e mail it as quickly as to somebody however the laptop sees it as of project so which you won't be able to open it.

ms updates normally make a restore point in windows restore. or if you know what update did the trick, check updates in add/remove and find the one and remove it

however could be malware on your desktop conflicting.

make system restore.

start, all programs, accessories, system tools, system restore (select point before your computer was ok)