However, solution can still be found and they can be tried even if you are not able to boot into your operating system. Try following some of the methods below in order to get rid of this problem and boot into Windows normally.
Solution 1: Check the Boot Order in BIOS
There are various reasons on why the boot order on your computer might have gone corrupt but the most important thing is that you can easily solve the problem without breaking a sweat simply by tweaking certain settings in BIOS. It can be a little alarming for novice Windows users but make sure you follow the instructions carefully in order to solve the problem efficiently.
If you are not sure how to boot from your hard drive again, you need to know just which option to select when the boot menu opens. It will ask you from which device you want to boot your computer. Follow the instructions below to boot from your hard disk drive easily. NOTE: No text field displays for the code. This to be expected. When you type the numbers, the code is logged without a text field, so try to be more careful than usual.
Solution 2: Run the DSKCHK Check from the Recovery Media
The DSKCHK utility will scan your hard drive for errors, bad files, and corrupt sectors. It’s quite a useful utility and running it has saved several users who also received the “boot selection failed because a required device is inaccessible” error message on their computer. You will, however, need to use the DVD you used to install your operating system. Still, Windows 10 users have the option of creating one manually if they need to.
Now that you have this recovery DVD for Windows 10 as well, follow the steps below according to your operating system in order to open Command Prompt without the need to boot into your OS first:
WINDOWS XP, VISTA, 7: Windows Setup should open prompting you to enter the preferred language and time and date settings. Enter them correctly and choose the Repair your computer option at the bottom of the window. Keep the initial radio button selected when prompted with Use recovery tools or Restore your computer and click on the Next option. Choose Command Prompt when prompted with the Choose a recovery tool selection.WINDOWS 8, 8.1, 10: You will see a Choose your keyboard layout window so choose the one you want to use. The Choose an option screen will appear so navigate to Troubleshoot » Advanced Options » Command Prompt.
CHKDSK /R /X C:
Solution 3: Reset BIOS
This solution will be useful to users who tried to get into BIOS by following the instructions above but they simply weren’t able to make any progress with the methods above. As the title suggests, removing this battery will cause all boot and other BIOS settings to be reset to their defaults which helped plenty of users deal with this solve the boot problem Note: With some computers, you may need to disconnect cables, remove drives, or remove other parts of the PC to get full access to the CMOS battery.
Solution 4: Disable the Quick POST Option in BIOS
The Quick POST or Quick Boot option which is located in BIOS settings enables you to somewhat speed up your booting process. There are certain tests which are run each time you boot your computer. All of these system tests are not needed every time you boot, and can be turned off to save time and that is what Quick POST does. Here is how to disable it.
Solution 5: Use Startup Repair
Startup Repair pretty much deals with these types of issues and it can be accesses using the same recovery drive you used before. However, this method should be implemented at least three times, as suggested by industry experts, in order to be certain that it does or does not work. Good luck!
WINDOWS XP, VISTA, 7: Windows Setup should open prompting you to enter the preferred language and time and date settings. Enter them correctly and choose the Repair your computer option at the bottom of the window. Keep the initial radio button selected when prompted with Use recovery tools or Restore your computer and click on the Next option. Choose Startup Repair (the first option) when prompted with the Choose a recovery tool selection.WINDOWS 8, 8.1, 10: You will see a Choose your keyboard layout window so choose the one you want to use. The Choose an option screen will appear so navigate to Troubleshoot » Advanced Options » Startup Repair
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