Windows 10 black screen blinking shift key

Question

Windows 10 update, now only black screen an blinking shift key

Answer 1

Hi James,

First make sure there are no other drives connected to your PC

Remove any SD cards . . . etc

Start your PC, just as Windows attempts to load (spinning dots), press and hold Power Button for 5 - 10 seconds to perform a Hard Shut Down

Do this twice

On the third start Windows will boot into the Recovery Environment and from there you can access System Repair, Safe Mode, Command Prompt . . . etc.

Please try each option one at a time, then see of Windows will boot . . .

Go to Troubleshoot - Advanced Option - Startup Repair

See if Windows startup can repair itself

Go to Troubleshoot - Advanced Option - System Restore

Check to see if you have a restore point you can go back to

If you do not have a Restore Point, go to Troubleshoot - Advanced Option - Startup Settings and click Restart

Upon restart, press 4 to enter Safe Mode

Once in Safe Mode, backup your data if you do not already have a backup

Open Device Manager and check to make sure all your Drivers are up to date

Reboot to see if Windows will start Normally

If the above fails, go to Troubleshoot - Advanced Options - Reset this PC

Choose to keep your files and apps, just your files or to keep nothing

Then start the Reset

Answer 2

Hi James. I'm Greg, an installation specialist and 8 year Windows MVP, here to help you.

Here are steps to recover from failed Updates or Version Update install which causes Windows to fail to start:

1. Try whichever method works here to get into Advanced Startup Options to run System Restore if this is a Windows Update, or Go Back to Old Version if this is a version update. https://www.tenforums.com/tutorials/2294-advanc.... Easiest is to restart or force shutdown the PC 3 times.

If you are able to access System Restore or Go Back and it fails, skip to step 3.

2. If necessary create bootable installation media to access the repair options if not accessible by any other method: http://windows.microsoft.com/en-us/windows-10/m...

Boot media by powering up the PC while pressing the BIOS Boot Menu Key: https://www.sysnative.com/forums/hardware-tutor...

You may need to enter BIOS/UEFI Setup to turn off Fast Boot if it won't allow the Boot Menu key to interrupt starting Windows: https://www.mydigitallife.net/comprehensive-lis...

Choose UEFI version of media if offered, browse to second screen to Repair Your Computer link, then Advanced Troubleshoot options to run System Restore to a point before the problem began, or choose More Options to Go Back to Old Version if this was a version Update.

If it rolls back then you can hide the Windows Updates and Version Upgrade responsible until they mature by installing and running immediately the Hide Updates tool: https://www.howtogeek.com/224471/how-to-prevent...

3. If this fails try a Startup Repair, or go back to Troubleshoot Options on the previous screen to Reset your PC which will save your files while reinstalling Windows.
4. If that fails you can use the booted media to do the Clean Install the latest version which should get you past all difficulties as it has hundreds of thousands of others who have followed the steps in this link and never come back to report another problem: http://answers.microsoft.com/en-us/windows/wiki... The link compiles the best possible install of Windows 10 that will stay that way as long as you stick with the tools and methods given.

There is a step to rescue files from the same bootable media: http://answers.microsoft.com/en-us/windows/wiki...

Once you're back in Windows 10, you can block the problem Windows or Version Update using one of these methods: https://www.howtogeek.com/224471/how-to-prevent...

Feel free to ask back any questions and let us know how it goes. I'll keep working with you until it's resolved.