How to Fix the No Bootable Device Acer Error on Windows PC?

A lot of Acer users encounter the No Bootable Device Acer error on their Windows 7/8/10/11 computer, such as the Acer Nitro 5 No Bootable Device, Acer Aspire 5 and 7 no bootable device error, No Bootable Device Acer Windows 10, No Bootable Device Acer Windows 8, and more. This error bothers them a lot. Here’s an example from Reddit:

So I was washing my keys with a damp towel. I turned off my Acer Gaming laptop, and the next thing I knew I got that message - No Bootable Devices! I read online to try and change some stuff in the boot tab in bios but it’s all greyed out... This laptop cost a lot, and I would sincerely appreciate any help.https://www.reddit.com/r/WindowsHelp/comments/15fxs2c/no_bootable_devices_acer_gaming_laptop/

Have you ever encountered the Acer No Bootable Device error? Don’t worry. This troubleshooting guide will help to fix the No Bootable Device error on all Acer laptops, including Nitro 5 & 7, Aspire 3, 5, and E15.

Therefore, if you are encountering the Acer Nitro 5 No Bootable Device error, Acer Aspire 5 and 7 no bootable device error, or any related No Bootable Device Acer error, you can continue reading this post to get the solutions.

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Causes of No Bootable Device Acer

After searching this error on the Internet and reading extensive related posts, I find the error can be caused by these reasons:

• Boot order is incorrect.
• Master Boot Record (MBR) is corrupted.
• Disk errors or bad sectors on the primary hard drive.
• System partition is not set as active.
• System partition is lost.
• Operating system file is damaged.

How to Fix No Bootable Device Acer Error?

How to fix No Bootable Device Acer error? We summarize 8 practical methods in this section to help you get rid of this error. You can try them one by one until the error gets fixed successfully.

# 1. Disconnect External Peripherals

Some users report that the connected USB external peripherals could trigger the No Bootable Device Acer Windows 10 error. So, you can try unplugging those unnecessary external devices one by one to find out the culprit. If it doesn’t work, continue to try other methods.

# 2. Check Hard Disk Connection

If your hard drive does not connect properly with your laptop, you can also encounter the Acer No Bootable Device error on your PC easily. In this case, you can try checking the hard disk connection to fix the error. Here’s the guide:

1. Turn off your Acer laptop computer, and then open the back cover.
2. Check if the SATA cable is securely or correctly connected to the motherboard and the hard disk.
3. Once done, restart your computer and check if the Acer No Bootable Device is fixed.

# 3. Set the Bootable Hard Disk Order

If you have inserted an unbootable disk on your Acer laptop or haven’t set the bootable disk as the first startup item, you can also encounter the No Bootable Device Acer Windows 10 error or No Bootable Device Acer Windows 8 error. In this situation, you need to change the boot order to fix the error. Here’s how to do it:

Step 1. Restart your computer, and then press the BIOS key to enter the BIOS menu.

Step 2. In the BIOS menu, go to the Boot tab, and use “+” and “–” to move the disk.

Step 3. Once done, press F10 to save the Boot order change and exit the BIOS menu. Then, restart your PC and check if the error has been resolved.

# 4. Set the System Partition as Active

You can also encounter the Acer No Bootable Device error if the system partition is not “active”. In this case, you can try setting the System Partition as Active to fix the error. Here’s the tutorial:

Step 1. Create a Windows installation disk and boot your PC from it.

Step 2. Select the language and region, and click Repair your computer.

Step 3. Then go to open Command Prompt.

For Windows 8/10 users: Select Troubleshoot > Advanced options> Command Prompt.

For Windows 7 users: Select Windows 7 as the operating system under “System Recovery Options“, click “Next“, and then “Command Prompt“.

Step 4. Type the following commands sequentially, and press Enter after each command:

• Diskpart
• list disk
• select disk X (X represents your system disk number)
• list partition
• select partition X (X represents the system partition number)
• active

Step 5. Once done, exit Command Prompt and restart your computer.

# 5. Repair Damaged MBR

The Master Boot Record (MBR) is the information in the first sector of a hard disk or a removable drive. It can be corrupted because of virus infection and bad sectors. So, if you suspect that the corrupted MBR causes the Acer laptop No Bootable Device error, you can try repairing the MBR to fix it. Here’s the way:

Method 1. Use Command Prompt

Step 1. Use the Windows installation disk to boot your computer and navigate the Command Prompt.

Step 2. Type the below commands in the given sequence. And don’t forget to press Enter after each command:

• bootrec /fixmbr
• bootrec /fixboot
• bootrec /scanos
• bootrec /rebuildbcd

Step 3. If those commands do not work, run the commands below:

• bcdedit /export C:BCD_Backup
• c:
• cd boot
• attrib bcd -s -h -r
• ren c:bootbcd bcd.old
• bootrec /RebuildBcd

Step 4. After running these commands, exit Command Prompt and restart your computer to check if your problem is resolved.

Method 2. Use MiniTool Partition Wizard

MiniTool Partition Wizard is a professional and multifunctional disk manager that can help you rebuild MBR with ease. In addition, this tool can also help you to partition hard drive, convert MBR to GPT, do data recovery, migrate OS to SSD without reinstalling OS, format USB to FAT32, and more.

Here’s how to use MiniTool Partition Wizard’s Rebuild MBR feature:

Part 1. Create Bootable USB Media

MiniTool Partition Wizard DemoClick to Download100%Clean & Safe

1. Download and install MiniTool Partition Wizard on a working computer.
2. Launch into its main interface, and then connect a USB flash drive to the computer.
3. Click Bootable Media from the right corner of the top toolbar.
4. Then select WinPE-based media with MiniTool plug-in.
5. Next, click your USB flash drive.
6. Wait for the process to complete.

Part 2. Rebuild MBR via MiniTool Partition Wizard

Step 1. Connected created bootable USB media to your Acer computer, and then boot from it.

Step 2. In the MiniTool Partition Wizard’s interface, choose the system disk from the right disk map, and then select the Rebuild MBR feature from the left pane.

Step 3. Click the Apply button on the left bottom, and then click Yes in the pop-up window to execute the changes.

Once done, restart your computer and check if the No Bootable Device Acer error is fixed.

# 6. Fix the Disk Error

Disk errors and bad sectors on the system disk can also trigger the Acer No Bootable Device error. In this case, you can try using CHKDSK commands to fix the error. Here’s the guide:

1. Use the Windows installation disk to boot your computer and open the Command Prompt.
2. Type the command “chkdsk E: /f /r /x” and press Enter. (Replace “E” with the letter of that partition you want to fix)

If you fail to perform the CHKDSK utility on your PC, you can also try using MiniTool Partition Wizard to help you do that. It provides the Check File System feature to help you check and fix disk errors and the Surface Test feature to help you scan the bad sectors. Here’s how to do it:

Check File System:

1. Boot your PC from the created bootable USB media.
2. Select the partition that you want to check from the disk map.
3. Select Check File System from the left pane.
4. In the Check File System window, select Check & fix detected errors.
5. Next, click Start.
6. Once done, all the disk errors will be fixed successfully.

Surface Test:

1. Boot your PC from the created bootable USB media.
2. Select the partition that you want to check from the disk map.
3. Select Surface Test from the left pane.
4. In the Surface Test window, click the Start Now button.
5. Once the scanning process is complete, bad sectors will be marked with red color.
6. If there are too many bad sectors, you can consider replacing your hard disk.

# 7. Repair Corrupt Boot Files

Corrupted system files are also responsible for the No Bootable Device Acer error. So, you can perform SFC and DISM commands to fix the corrupted system files and then fix the No Bootable Device Acer error. To do that, you can do as follows:

Step 1. Use the Windows installation media to boot your PC and navigate to Command Prompt.

Step 2. Type the command “sfc /scannow /offbootdir=c: /offwindir=c:windows” and press Enter.

Step 3. If this command can’t solve the error, you need to try running the DISM command “DISM /Online /Cleanup-Image /RestoreHealth”.

Step 4. If the previous command also doesn’t work for the error on your PC, you can try the next commands:

• Dism /Image:C:offline /Cleanup-Image /RestoreHealth /Source:c:testmountwindows
• Dism /Online /Cleanup-Image /RestoreHealth /Source:c:testmountwindows /LimitAccess

# 8. Recover Lost System Partitions

If the system partition of your Acer computer has been deleted accidentally, you can also encounter the Acer laptop No Bootable Device error. Luckily, MiniTool Partition Wizard provides the Partition Recovery feature that can help you recover lost partitions. So, you can use it to have a try. Here are the detailed steps:

Step 1. Use the created MiniTool Partition Wizard bootable USB media in # 4 to boot your computer.

Step 2. In the main interface of MiniTool Partition Wizard, click the Partition Recovery feature from the top toolbar, and then click Next in the pop-up window.

Step 3. Select the disk you like to recover and then click Next.

Step 4. Select the Scanning Range according to your needs, and click Next.

Step 5. Select the scanning method you like and click Next.

Step 6. Wait for the scanning process to complete.

Step 7. Check all needed partitions, including existing partitions and deleted/lost partitions, and then click the Finish button.

Step 8. After that, use the Change Drive Letter feature to assign letters for the recovered partition(s).

Once done, restart your computer and check if the Acer computer can boot normally.

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Have A Try Now

Here comes the end of this post. We have analyzed the possible causes of the No Bootable Device Acer error and provided 8 feasible troubleshooting methods. Have you any other suggestions for the Acer No Bootable Device error? Please share them with us in the following comment area.

Besides, if you have difficulty using MiniTool Partition Wizard, contact us via [email protected]. Then, we will back to you as soon as possible.