Windows 10 Login Crash after upgrade

Hi,

Thank you for posting your query on Microsoft Community.

Sorry to know that you are not able to login to the Operating System. Let me try and assist you with the issue you are facing.

I would suggest you to perform safe mode from Windows Recovery Environment and check if the issue persist.

Follow the steps below to do so:

1. Press and hold shift button and then click on power icon which is on bottom right corner

2. And then click on Restart this should bring up the Windows Recovery Environment.

3. In the Windows Recovery Environment, on the Choose an option screen, tap or click Troubleshoot.

4. Tap or click Start-up Settings.

5. If you can't see Start-up Settings, tap or click Advanced options, then tap or click Start-up Settings.

6. Tap or click Restart, then wait while your computer restarts.

7. On the Start-up Settings screen, choose an option.

Sign in to your computer with a user account that has administrator rights.

Note:  To exit safe mode, restart your computer and let Windows start normally.

If the computer works fine in safe mode, perform a clean boot

Putting your system in Clean Boot state helps in identifying if any third party applications or startup items are causing the issue. You need to follow the steps from the article mentioned below to perform a Clean Boot.

How to perform a clean boot to troubleshoot a problem

http://support.microsoft.com/kb/929135

Disclaimer: Refer the section “How to reset the computer to start as usual after troubleshooting in clean boot” of the Kb article to boot the computer in normal startup after fixing the issue.

Note: The troubleshooting steps in the above links are meant for windows 8, however, you can use the same for windows 10 tech preview as well.

Hope this information helps and let us know the status of the issue we will be glad to help you.

Thanks. 

Yes, you should clean install your previous OS. However, due to the nature of your issue—I would like you to flash your bios and clean your disc from Command Prompt at boot. This can help to resolve any sneaky corruptions haunting your hard drive.

In order to do this, unplug the power cord from your computer, open your case, and remove the battery from the motherboard. Leave this removed for a few minutes. Press the power button to expel any lingering electricity in the system.

Put the battery back in, then press [DEL] to enter the bios upon start up. Navigate the menu and adjust the time, date, and then make sure that the [Boot Menu] option is enabled. You'll need this in order to boot from disc.

Save your settings and proceed to boot from the installation disc of your original version of Windows.

There in the opening menu, select the "Repair your computer..." option.

Navigate this menu and find the Command Prompt option. Open that and when the CMD window pops up, enter the following commands in sequence.

diskpart

list volume

select volume #—enter the number listed as your hard drive

clean

This will totally wipe your hard drive clean, including your boot records. This can be used to solve extremely technical and comprehensive problems affecting your hard drive.

Close the window—reboot the computer—and proceed to boot from your Windows installation disc and fresh install your original version of Windows.

Once you have that installed and activated, you should be able to pop in your Windows 10 installation disc and jump straight to Windows 10 without any problems.

Just make sure keep your computer physically disconnected from the internet while you perform this recovery—and change your IP address as well.

You can do this by simply unplugging your modem for 30 minutes and plugging it back in—unless your Internet Service Provider assigns your IP address based on MAC Address credentials. If this is the case, you'll need to go into your router and change your MAC Address Clone (you can just enter in anything)—as well as change your Subnet Mask.

You could also try calling them up and asking them to forcibly change your IP for you.

From there, follow the instructions I've outlined in the discussion below to properly create a Windows 10 installation disc and properly upgrade your system to Windows 10.

http://answers.microsoft.com/en-us/windows/forum/windows_10-windows_install/windows-10-manual-upgrade-installation/8cb20cea-4d1c-4c1e-996c-b248493d10e8?tm=1438499976622

Hi,

Sorry for the delay in response.

Please follow the steps from the thread and check if it helps.

Hope it helps.

It's a year later so you may be seeing something different now.  In any case, since the user could get to a login screen they could get to the Advanced boot options via Shift-Restart in the Power button menu--something that is still available in the latest W10 login screen UI.  Note: the login screen occurs before the "Welcome back..." etc.  So before entering a password there look at the bottom right for the Power icon.

HTH

Robert Aldwinckle
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