No Boot Device Available Dell: How to fix it in Windows 10/8/7?

February 21, 2019

If your Dell computer pops out message “No bootable devices found” during Windows boot, no need to worry now, this article will show you how to fix no boot device available in Dell, HP, Asus, etc.

“No boot device available dell”

“About a month ago my Dell Inspiron 15 began to refuse booting and give the report “no bootable devices available. Press the F1 key to retry boot, F2 to run the Setup utility…”.  This has been going on nearly every day. Striking the F1 key doesn't help. It gives the same error. What else can I do about this?”

No Boot Device Found

What does “No Boot Device Available” mean?

When your computer fails to boot and pops this error message saying no bootable devices found, you might wonder what does the message mean? Basically, this error means the computer was unable to get any access to the disk that holds boot information, scanning all connected disks for boot information but getting nothing, or there is something wrong with the cables or Windows boot files. So it cannot boot successfully.

Possible causes

Therefore, if you want to fix no boot device available Dell, you should first figure out why this occurs. Here are some major causes you can consider.

  • the computer is infected with terrible virus.

Generally speaking, if your computer is attacked by virus, the essential system files or folders might get damaged, and the computer cannot recognize or find the bootable disk. Run antivirus software or format your hard disk via a disk formatting utility to clear the virus.

  • computer has been misled to boot from an unbootable hard drive.

If you insert an unbootable disk or CD into your computer and set it as boot device by mistake, this error will appear since only when the drive that loads operating system is set as the bootable device, the computer can start smoothly.

  • computer’s internal hard disk gets damaged/corrupted.

When the internal hard disk is damaged, the saved operating system and boot files will get corrupted as well, then the computer will report no boot device as well. So you need to repair corrupted interanl hard disk.

  • computer's boot hard disk MBR sector has been corrupted somehow.

When the MBR (Master Boot Record) is corrupted, then the boot failure will also happen. MBR sector is responsible for leading system to read necessary information to boot.

How to solve no boot device available Dell issue in Windows 10/8/7?

In order to fix such issue, you can try the following solutions, all of which are proven to be effective, and could also apply for no boot device in Acer, HP, Asus and other famous computer.

Method 1. Check and reset the boot order

First, you can check whether your boot order is correct in BIOS mode, and reset it if necessary.

Step 1. Turn on your computer and constantly press "F2/F10/Del" button to enter BIOS mode.

Step 2. Use the arrow key on your keyboard to get "Boot" tab, change the boot order setting to make your bootable disk on the top of the boot device list.

Step 3. Follow the instruction given to you in the BIOS utility to navigate to Exit tab.

Step 4. Locate and choose the "Exit Saving Changes" option to save the changes you have made.

Step 5. Follow the prompts to restart your computer.

Method 2. Check disk status and diagnose the problems

If the no boot device available issue is still unsolved after changing the boot order, you can run CHKDSK to check the disks status and perform diagnosis.

To run CHKDSK, do as follow:

Step 1. Insert the original Windows disc, restart your computer and boot from the disk.

Step 2. At the Windows 8/10 Welcome screen, click "Repair your computer-> Troubleshoot->Command Prompt". (In windows 7, click "Command Prompt" under "System Recovery Options")

Step 3. When the Command Prompt window appears, type the command "chkdsk c: /f /r /x" and press "Enter'.

The parameters for this command are:

c: stands for the drive you wish to examine or repair

/f attempts to fix any found errors

/r will locate for bad sectors and recovery any readable information.

/x will force the volume you’re about to check to be dismounted before the utility begins to scan

Run the CHKDSK requires an original Windows disc. If you don’t have one, you can turn to AOMEI Partition Assistant Standard, with which you can create a bootable media, then boot your computer from it and check whether there are some bad sectors.

Now do as the instruction below:

Step 1. make a bootable USB

1)   Connect an empty USB (larger than 8GB) to a good working Windows 7/8/10 based-on computer, and download the freeware.

2)   Install and launch AOMEI Partition Assistant, click on the Make Bootable Media in the left pane. Follow the wizard to create a bootable USB disk. When it is finished, disconnect the USB stick. (Note: AOMEI Partition Assistant Standard is pre-installed on the bootable drive.)

Make Bootable Media

Step 2. check and fix the disk error

Insert the bootable USB to the computer reporting no boot device available error, power up it to enter BIOS and make the USB as the first boot device, and then restart computer to Windows PE mode.

1)  Once logged in, the AOMEI Partition Assistant Standard will load and start. In the main interface, find the disk you want to check and right click one of its partition, select "Advanced->Check Partition".

Advanced Check Partition

2) Select a way of checking disk error, the first one is recommended, which not only checks the disk error, but also fixes it. And click "OK".

Check Partition And Fix Errors

3) Wait for seconds, it will be done, and then click "OK".

Check And Fix Partition

Besides, it is also able to make a disk surface test to make sure that your hard drives have no bad sectors.

Method 3. Rebuild MBR

Rebuilding your hard disk MBR sector is also an effective solution to troubleshooting the boot failure problem. The AOMEI Partition Assistant can help you with this task, too.

Step 1. Restart your computer from the bootable media, run the software, right-click the boot hard disk and select "Rebuild MBR".

Rebuild System Disk MBR

Step 2. In the popped out mini windows, choose the proper MBR for your operating system and click "OK".

Choose MBR Type

Step 3. Click Apply->Proceed in the main interface to commit the change.

Apply

When it is done, you can unplug the bootable USB and restart your Dell computer now. Note: since MBR is of great importance, and decides whether the system could boot up normally and successfully, you can backup MBR just for an easy recovery when it gets damaged someday.

Final Words

Now, I bet you have a better understanding of why the no boot device available Dell happens, what it means and how to fix this issue accordingly. It is self-evident that AOMEI Partition Assistant is a really versatile freeware that provides several different methods to repair “no bootable device found” issue.

If you want to experience more wonderful functions like migrating OS drive to SSD, erasing SSD drive, allocating free space from other partitions to C drive when it is full, you can upgrade to AOMEI Partition Assistant Professional.