Black Screen Issue After Restarting Windows Virtual Machine

Question

Hi, I 'am Experiencing an issue with a Windows virtual machine (VM) that was working fine earlier. After restarting, the VM hangs and displays a black screen not able see anything what could be the causing the the issue & how to fix it?
Regards,
Neha.

Answer 1

Hi Neha,
It sounds like you're dealing with a frustrating black screen issue after restarting your Windows VM. Here are a few steps you can try to resolve this:

1. Boot Diagnostics: Enable Boot diagnostics in the Azure portal to get insights into why your VM is stuck. This can give you an idea of what’s happening during the boot process.
2. Using Windows Boot Disk: If you have a Windows boot disk, try to boot from it. This can help you check and repair any damage to the boot sector or master boot record (MBR).
   • After booting from the disk:
   • If you can access the system, back up any important data immediately.
   • Use the command FDISK /MBR to fix the MBR if needed.
3. Run Repair Option: If you manage to get into the recovery options, you can select the "Repair your computer" option to try and fix any startup issues.
4. Check for Viruses: Boot the VM using an MS-DOS disk and run a virus scan to check for any infections that might be causing issues.
5. Configuration Issues: If you recently changed configurations or applied updates to the VM, it might help to wait a little longer for it to complete the setup since large updates can cause delays. If that doesn't work, consider restoring the VM from a backup if you have one.
6. Advanced Commands: You can also use commands like bcdedit to check the boot manager configurations and ensure everything is set correctly.