[Resolved] Black Screen After Login into Windows 8

Yesterday, I was installing Windows 8, it seemed run smoothly. Then I installed some applications just like the previous OS, windows 7. And then the problem happen >> Blank Screen after login into Windows 8. Only a black screen and a cursor. There are several causes that make the black screen happens.

  1. Updating crashed window updates
  2. Updating conflicted drivers
  3. You using Avast free Anti Virus
  4. etc

I won’t explain how to resolve the 1st and 2nd cause because in my case (finally I find out) the cause of this problem is that I’m using Avast Free Anti Virus. There’s two step

  1. Go into Safe Mode
  2. Disable “Monitor The System for Unauthorized Modification” in “Beahaviour Shield” settings

Go into Safe Mode

So you can not do anything about the black screen, the only way to reach windows is by went to safe mode. There’s a problem when you install Windows 8 : You can not go into safe mode because of the fast boot feature on Windows 8 (you usually go to safe mode by click F8 key or DEL key in ASUS right after boot).

So how to enter that mode?

How to Fix Black Screen after Booting Windows 8?

Since Windows 8 does not allow administrators to enter into safe mode by pressing F8 or Shift + F8 keys, it has to be enabled in Windows 8 by executing the BCDEDIT /SET {DEFAULT} BOOTMENUPOLICY LEGACY command in the command window while restarting the system using Windows 8 bootable media.

Once the command has been executed successfully, administrators can enter into safe mode by pressing F8 key, and can troubleshoot the following tasks.

***

The Resolution for 3rd case

For the 3rd case :

  • Open Avast
  • Go into Security
  • Click Behaviour Shield
  • Click Setting
  • you can disable the  “Monitor The System for Unauthorized Modification” in “Beahaviour Shield” settings. Just as simple as that. DONE. You can login into Windows 8 normally. Hope avast fix this bug.

Other Resolution for 1st case/2nd case, source

Workaround #1 : Uninstalling the Updates

  1. Restart Windows 8 computer and insert Windows 8 bootable media into optical media drive (CD/DVD Drive).
  2. On the displayed Windows Setup box, click Next.
  3. On the next page, click Repair your computer.
  4. On Choose an option screen, click Troubleshoot.
  5. On Troubleshoot screen, click Advanced options.
  6. On Advanced options screen, click Command Prompt.
  7. On the opened Command Prompt window type C: and hit Enter.
  8. On C: prompt, type BCDEDIT /SET {DEFAULT} BOOTMENUPOLICY LEGACY command, and press Enter.
  9. Click Exit command to close the Command Prompt window.
  10. Back on the Choose an option screen, click Continue to restart Windows 8 computer.
  11. As the system restarts, press F8 key continuously to display the Advanced Boot Optionsscreen.
  12. On the Advanced Boot Options screen, make sure that Safe Mode is selected and press Enter.
  13. Log on to Windows 8 computer with the administrator account.
  14. Click Desktop tile from the Start screen to go to the desktop screen.
  15. Once on the desktop screen, hover mouse to the bottom right corner of the window.
  16. From the displayed options, click Settings.
  17. On the Settings pane, click Control Panel.
  18. On the opened All Control Panel Items window, click Programs and Features.
  19. On Programs and Features window, click View installed updates from the left pane.
  20. On Installed Updates window, right click the recently installed update.
  21. From the displayed option, click Uninstall to remove the selected update.

Rolling Back the Updated Drivers

  1. Restart the Windows 8 computer and press F8 key continuously to display the Advanced Boot Options screen.
  2. On the Advanced Boot Options screen, make sure that Safe Mode is selected, and press Enter.
  3. Log on to Windows 8 computer with the administrator account.
  4. Click Desktop tile from the Start screen to go to the desktop screen.
  5. Once on the desktop screen, hover mouse to the bottom right corner of the window.
  6. From the displayed options, click Settings.
  7. On the Settings pane, click Control Panel.
  8. On the opened All Control Panel Items window, click Device Manager.
  9. On Device Manager window, double-click to expand the device category, driver of which is updated recently.
  10. From the expanded list, right click the updated driver.
  11. From the displayed context menu, click Properties.
  12. From the displayed Properties box, go to Driver tab.
  13. On selected tab, click Roll Back Driver button to roll back to the previously installed driver.

Note: Roll Back Driver button only becomes available if the device driver is updated.

Uninstalling the Culprit Drivers

  1. Restart the Windows 8 computer and press F8 key continuously to display the Advanced Boot Options screen.
  2. On the Advanced Boot Options screen, make sure that Safe Mode is selected, and press Enter.
  3. Log on to Windows 8 computer with the administrator account.
  4. Click Desktop tile from the Start screen to go to the desktop screen.
  5. Once on the desktop screen, hover mouse to the bottom right corner of the window.
  6. From the displayed options, click Settings.
  7. On the Settings pane, click Control Panel.
  8. On the opened All Control Panel Items window, click Device Manager.
  9. On Device Manager window, double-click to expand the device category, driver of which is to be uninstalled.
  10. From the expanded list, right click the driver that is to be removed.
  11. From the displayed context menu, click Uninstall.
  12. On the Confirmed Device Uninstall box, click OK to uninstall the selected device driver.
  13. Close the Device Manager window when done.

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