Blackscreen with cursor while upgrading to windows 10

Trixia,

1. You may have to use installation media of Windows 10 Technical Preview (such as a DVD or USB) and try to boot to Safe mode and check the results.
2. If you do not have media, use the power button to restart your computer during the boot process three times (do not let it get to the end of the boot process) . This should bring up the Windows Recovery Environment.
3. Once you have started in Safe Mode with Networking, check for updated drivers:

• Swipe in from the right edge of the screen, tap Settings, and then tap Change PC settings.
  (If you're using a mouse, point to the upper-right corner of the screen, move the mouse pointer down, click Settings, and then click Change PC settings.)
• Tap or click Update and recovery and then tap or click Windows Update.
• Tap or click View details, and tap or click Check for updates. (If you don't see View details, there aren't any optional updates available.)
• Under Optional, tap or click the update that you want to install, then click Install.

If the issue still persists, you might want to restore the driver for a device to a previous version.

a.    Press Windows key + R and type devmgmt.msc.

b.    Double-click the category containing your device driver, and then double-click the name of the device that you want to restore to a previous driver version.

c.    Click the Driver tab, and then click Roll Back Driver

Note: If there's no previous version of the driver installed for the selected device, the Roll Back Driver button will be unavailable even if you are logged on as an administrator.

You can also click to watch the Youtube video below for information on resolving the black screen with cursor in Windows 10.

https://www.youtube.com/watch?v=oopiaiVLn9k

No idea what type of laptop you're using.

I upgraded an old Dell Inspiron E1705 from Window 7 to 10 and started getting strange behaviour of laptop booting up to black screen with blinking mouse cursor. No welcome screen or login screen, just this black screen.

Only happened on boot up from shutdown state, didn't happen on restarts.

I was able to hit the power button to cycle and could get to login.

Some google searches later and my fix was to turn off "fast startup" under Power Options. Symptom gone, so far, and no discernible impact to startup time.

Hope this helps.