How to Fix Inaccessible Boot Device Error? (Solved)

How to Fix Inaccessible Boot Device Error?

How to Fix Inaccessible Boot Device Error?

The above picture is a representation of what an inaccessible boot device error looks like. The system’s monitor turns blue, and the above-shown message is displayed to the user. Inaccessible Boot Device Error is one of the BSOD errors, where BSOD is an acronym for Blue Screen Of Death. Though this is one of the scariest errors for Windows OS (XP/7/8/8.1/10), it can be very easy to fix. But why does this error show up? It’s because the computer is incapable of reading the Windows partition on the hard drive from which it boots. There are several reasons which may lead to Inaccessible Boot Device Error. Let us look at some of the possible reasons:

  • Incorrectly configured old/corrupt device drivers
  • Corrupted Windows registry file
  • Driver conflict between hardware
  • Virus/malware infected Windows system files
  • Damaged system files
  • Damaged RAM/hard disk

Also Read : How To Fix ‘Driver Power State Failure’ Error ?

5 Working Solutions To Fix Inaccessible Boot Device Error

1. Troubleshoot Method:

Boot your computer into Safe mode by the following methods:

  • Reboot your computer
  • In the login screen, click Restart while holding Shift

Doing this will take you to the Safe mode.

Among the options available, select troubleshoot. Once Windows is completely loaded, reboot as you normally would. This might be too simple, but it tackles more occurrences than you can guess.

Solve Inaccessible Boot Device Error

2. Check Device Drivers

Right click on My Computer and click Properties. Now, select Device Manager. You need to update drivers in order to get rid of Inaccessible Boot Device Error. To update a driver:

  • Right click on the driver of your choice and click Update Driver option
  • Update each driver one after another and then restart the computer

This might probably Fix Inaccessible Boot Device Error.

Fix Inaccessible Boot Device Error

3. Repair Corrupted/Damaged Hard Disk

To check a damaged hard disk, open command prompt in Safe mode. Type the following command and press enter:


You will be guided by the command prompt through a series of processes. Upon completion, the PC will restart automatically. If it doesn’t, you may have to restart manually.

How To Fix Inaccessible Boot Device Error

4. Advanced Boot Option:

While booting your computer, make sure to boot it into the Advanced Boot Option and select ‘Last Known Good Configuration.’ Now, restore your system to roll back any Windows updates or drivers that might be the source of the error – Inaccessible Boot Device Error in Windows 7, 8, 10.

Fix Inaccessible Boot Device Error in Windows 7, 8, 10

5. BIOS Method:

Enter the BIOS (To go to BIOS: Boot the PC, while the firmware starts to run, press F2/F1) and do the following operation:

Main->SATA Mode->AHCI Mode

Save this configuration and then restart the system. This might remove Inaccessible Boot Device Error.

Remove Inaccessible Boot Device Error

Other solutions:

  • Remove any extra or recently installed hard drives and perform re-boot.
  • If none of the suggested methods work, reinstall Windows on your computer as a last resort.

The methods stated above may or may not function as it ultimately depends on the state of your system. Let a professional or a computer geek handle this if you are reluctant of trying it yourself or if none of the above suggested ideas are useful. If you are aware of other Methods to Fix Inaccessible Boot Device Error, do let us know in the comments section below.

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