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How to Fix Computer Won't Boot Up

Wondershare Recoverit Authors

Jan 27, 2024 • Filed to: Windows Computer Solutions • Proven solutions

It's really dreadful to start a day like this: You arrive at your office early in the morning, sit down and get down to the urgent work. Crap! The computer won't boot up at all. Reboot it, and still a failure. Most of computer users might have experienced this. Stay calm!

For Computer Won't Boot up with Hardware Issue:

If there's no signal light on your computer when you try to boot it, it might be a PC power problem or hardware problems, you need to check it yourself or find some professionals to fix it.

Note: There is another reason for this issue: Graphics card failure. When Graphic card is failed, your computer can be running but it won't boot at all.

Fix the Computer Won't Boot Issue with 5 Methods

No matter why your computer won't boot up, the first thing you should do is to get a Windows bootable disk or CD to get your computer starting. Only the computer is started, you can troubleshoot other errors or problems on the system.

To solve this problem is quite easy. There are 5 things you can do to save your Windows back. First of all, you need to create a bootable disk, check out this page to do that.

#1. Do a boot file recovery

When you start the computer, it always crashes with a black screen. There may be one of the following boot files lost. You can do a boot file recovery to get them back to normal. For detailed steps, check How to Repair a BOOTMGR Missing Error
* NTLDR is missing or corrupted
* Ntdetect.com is missing
* Ntoskrnl.exe is missing
* NTFS.SYS is missing
* BOOTMGR is missing or corrupted
* Hal.dll is missing

#2. Do an MBR recovery

MBR, the short name of Master Boot Recorder, locates the first sector of the hard disk. The MBR is not placed in a partition but located at a main boot record area in front of (with a lower LBA sector number than) the first partition. MBR issues can bring you the hard disk boot failure. When it happens, you will see "invalid partition table", "hard disk boot failure", etc. on your computer.

For the detailed solutions, check out this post about how to repair MBR on Windows 10.

#3. Do a boot sector recovery

The partition boot sector is a small section of the hard disk partition that contains information about the operating system's file system (NTFS or FAT32), as well as a very small machine language program that is crucial in assisting the operating system as it loads. If you suspect that Windows XP won't boot because the partition boot sector has been corrupted, you can try to fix it.

You can use this command chkdsk C: /f (you can replace C: to any drive, you'd like to run a scan for, e.g. D:) to check and fix a corrupt file system.

#4. Do a registry recovery

The registry is a small database that stores configuration settings and options in Windows. It contains settings for low-level operating system components as well as the applications running on the platform: device drivers, kernel, services, user interface, SAM, and third-party application all make use of the registry. If the Registry is corrupted, it may cause the computer won't boot up. You may encounter a blue screen, blank screen, application booting error, registry configure error, etc. All these problems may be caused by the Registry abnormity.

#5. Do a Windows restore

The problem of Windows booting failure can be caused by different reasons, like corrupted or missing Windows system files; corrupted DPT (Disk Partition Table); damaged MBR, and corrupted registry. If you backed up your Windows/MBR/DPT/Registry before, you can restore it easily by clicking the button below when they crashed.

Recover Lost Data When You Failed to Boot the Computer with the Above Methods

If the computer is running and you just can't boot it, you can fix this computer won't boot issue easily with a Windows bootable disk/cd. But if you have tried all the above methods and failed to boot the computer, the best choice to recover and backup files from the unbootable computer, then reinstall Windows 10.

Under these circumstances, Recoverit can help you to create a bootable media and recover all data from the unbootable computer.

With the steps below, you can conveniently recover all lost files from your unbootable Windows 10.

  1. The first step is to launch the Recoverit software on a normal computer and click on the "Recover from Crash Computer" option. Then, the action is to press the "start" button.


  2. The second step is to choose your preferred mode. In other to create a bootable drive, you have to pick the USB bootable drive. Press the "Create" tab to progress


  3. The next pop up window would request that you format the drive. However, ensure you have backed up all your essential files on an external drive before you proceed with formatting. Press "Format" to continue


  4. At this stage, your bootable drive is being created. Don't remove the USB flash drive in the entire process. You will also see further instructions on what next you should do or view the full guide to initiate data recovery


  5. This might take a while before it is completed. When it is completed, a three-step data recovery guide will pop up


  6. Next, you need to adjust the boot sequence and set it to boot from the bootable drive you created a few minutes ago. Then you can restart your computer and enter the BIOS F12 key. Depending on your system, the BIOS key may be different. Acquire more details about how to program your computer to boot from the USB drive


  7. When booting is completed, your Recoverit software will open automatically. You can then proceed to copy files from a hard drive, or recover lost data from Windows 10. Having gone through this process, you don't need to worry about recovering data from unbootable Windows 10. Contact us for such issues and we will be willing to help


  8. After you have recovered all the data on the computer won't boot up, you need to reinstall the Windows 10. Follow this page to create a Windows installation disk.
Recoverit author

David Darlington

staff Editor

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