Windows 10: Unable to boot system

I accidentally changed bios from legacy to efi and now my PC will not boot. It hangs at the Asus splash screen. Pressing del, f8 or f2 do nothing. I can't reinstall windows because I can't get into the bios . How do I either get my system to boot into the bios setup or reinstall windows from the Windows 10 disc.

:)

 

Unable to boot the computer.

Hi Samid,

Thank you for posting your query on Microsoft Community.

Before we proceed, we would require more information to assist you further.

• 
  What is the make and model of your computer?
  

I suggest you check if you are able to boot into Windows Recovery Environment using installation media. Follow the steps provided below and check.

• • Insert the installation USB and boot Windows 10 from it.
  • In the ‘Windows setup’ page select the ‘language to install’, ‘Time and currency format’ and the ‘keyboard or input method’ and click on ‘next’.
  • Click on ‘Repair your computer’ and select ‘Troubleshoot’.

Check if you are able to boot to this window. If you are unable to boot to this window, I suggest you to contact the manufacturer and check.

Hope this information is helpful. Reply us with this information to assist you further.

Thank you.

 

laptop doesnt boot automatically

This is what happened.

1. Did a repair install and later disabled hibertnate in CMD.
2. Enabled legacy option ROM in BIOS.
3. After a few times startup ( i used the system in such mode for 5 days), changed boot option back to default.
4. Vola!! It boots automatically to win10 without any keypress. Tested it with many starts to confirm the same.
5. Re-enabled hibernate option using CMD and later selected Fast Startup.
6. System booted normally, without the need for any keypress.

I do not know exactly whether such steps resolved the problem or what else happened, hence cannot suggest above steps.

Many thanks to all members who helped to troubleshoot problems.

 

Unable to boot the operating system to desktop after the Anniversary Update on Windows 10

Hi,

Now that you have me with you let me take care of this.

Provide us additional information to assist you better with this issue:

• What is the make and model of your computer?
• What is the complete error message/ error code of this issue?

As a workaround I suggest you to unplug all the external devices connected to your computer, hard reboot the device and check with the status of this issue.

If the issue still persists, try the below troubleshooting steps as the boot files of current operating system might got corrupted.

I suggest you to download Windows 10 ISO file, create an installation media from other working computer to perform Startup Repair of the computer that you are unable to boot.

Using ISO file to perform Startup Repair will allow the device to boot the system to Windows Recovery Environment and tries to repair the device.

Step 1:
I suggest you to try Startup Repairing the Windows and check if it helps.

Download the Windows 10 ISO and create a Media Creation tool and then perform Startup Repair.

Refer to the following link: Installing Windows 10 using the media creation tool

(Refer to the section "Installing Windows 10 using the media creation tool” in the above article for creating the tool).

Step 2: After creating the tool perform Startup Repair.

I would like to inform that, if your Windows 10 is not able to boot or startup, Startup Repair will come into action and try to diagnose and fix the issue. It will scan system files, registry settings, configuration settings and
more and try to fix the problem on its own, automatically.

Perform the Startup Repair:

• When your computer starts, wait for the manufacturer logo to check the option for boot menu, it will usually be
  F12.
• The boot menu key might differ with each manufacturer. If you are unable to find the boot menu key, you may refer the user manual.
• Restart the computer, when the manufacturer's logo is displayed, keep pressing the
  Boot menu option key to enter the boot menu and change the boot option to
  CD\DVD ROM.
• After you boot your computer using Windows 10 DVD, a black screen appears with gray text "Press any key to boot from CD or DVD". Press any key.
• Select the correct time and Keyboard type.
• Click Repair your computer in the lower left corner
• Click on Troubleshooting, advanced option and then click
  Startup Repair.

Hope it helps. Kindly update the status of accessing/ booting the operating system for further assistance.

Thank you.