How to fix insert boot media in selected boot device

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Are you troubled by “reboot và select proper boot device or insert boot media in selected Boot device & press a key” error when starting your ASUS, Toshiba, Acer, Gigabyte, computer? After reading this post, you should be able to find the best suggestions & quickly follow the solutions here to resolve this issue in Windows 10/8/7.

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My Computer Says Insert Boot Media

Recently, some users have reported khổng lồ us that the computer asks them lớn insert proper boot truyền thông when starting Windows. An error message shows on the screen, saying "Reboot & Select proper Boot device or Insert Boot Media in selected Boot device & press a key".

What does “reboot and select proper boot device” mean? It occurs when the system BIOS can"t find boot device which the OS is installed on.

Since it refers khổng lồ a BIOS error, this means you can get the error message on any computer running on Windows 10/8/7 and it always happens on ASUS, Toshicha, Acer, Gigabyte máy tính. In most cases, you may find Windows startup is still blocked here even if you reboot the computer.

Indeed, this is an issue troubling a huge number of Windows users. But you are lucky since you are reading this post because we will show you what could result in "reboot and select proper boot device" error along with effective sầu solutions.

Causes for "Reboot và Select Proper Boot Device" Error

Both physical and logical factors could generate this error.

Physical Causes:

BIOS detects the boot disk but it isn"t connected properly.The boot disk has been damaged or failed. If it is an old disk, take this factor inlớn consideration.

Logical Causes:

Set wrong partition active or there is no active sầu partition. The partition saving Windows boot files should be the very active sầu partition. If not, Windows will be unbootable.Wrong boot sequence in BIOS.Boot files get lost or corrupted.The operating system on boot disk corrupted.

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These are all possible causes we found, which could guide us khổng lồ fix the issue.

Of course, there might be other causes for this error. If you find one, please chia sẻ it in Comment part so as to lớn help more people. Posting the solution is much better.

How khổng lồ Quickly Fix "Reboot & Select Proper Boot Device" Error Windows 10/8/7

With knowing the exact cause for this error, you could take the corresponding measure, but it"s not easy lớn find the exact cause from all possible causes. Therefore, you need lớn vì a lot of attempts.

Luckily, the following tutorial shows what attempts should be done at first. In addition, aiming at different users, it gives different solutions. All these could help you save much time.

Cheông chồng Whether The Boot Drive sầu Is Detected by BIOS or Not

If Windows asks you khổng lồ insert boot device and press any key, you could kiểm tra whether the boot disk or installation truyền thông media is detected by BIOS, which should be the first step.

Please boot or reboot your computer & repeatedly press on F2, Del, Esc, or another required key to lớn enter BIOS before Windows is loaded. You can find the exact key from the internet. Then, under the Main or another tab, you"ll find all devices detected by BIOS.

If the disk where you want lớn start Windows isn"t here, shut down your computer, reconnect the hard disk, use another cable, or connect from another SATA slot.

Or reconnect the installation media if the "Reboot and select proper boot device or insert boot truyền thông media in selected boot device và press a key" error appears when you are installing Windows 10/8/7 lớn your ASUS, Toshibố, Acer, Gigabyte, etc. computer.


Then, you should be able to lớn start or install Windows if it is due to lớn faulty cable, damaged SATA slot or improper connection.

However, if the boot disk or installation truyền thông is originally here, please try our second method.

Cheông xã Boot Order in BIOS

Generally, you can find boot order or boot sequence in "Boot", "Startup", or similar tab:

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But sometimes, it is under "Advanced BIOS Features":

If the disk you want khổng lồ start Windows 10/8/7 from is not the first boot device, please phối it as the first boot device. If the Windows installation medium does not enjoy boot priority, please mix CD-ROM or removable device as the first boot device.

How to select boot device? The "↑", "↓", "+", và "−" key could help change the boot order.

At last, rethành viên to press on F10 khổng lồ save sầu changes và quit from BIOS. Then, you should be able khổng lồ start or install Windows.

Trick: Before quitting from BIOS, you"d better carefully view each tab khổng lồ see whether there is a signal showing you are using UEFI boot mode. The following screenshot shows it is under UEFI boot mode:

However, if it is not UEFI but Legacy, you are using Legacy BIOS boot mode. In addition, sometimes it is CMS (compatibility Support Mode), which supports both UEFI and Legacy BIOS. In addition, sometimes it is CMS (compatibility Support Mode), which supports both UEFI & Legacy BIOS.

However, if your ASUS, Toshiba, Acer, Gigabyte, etc. computer running Windows 10/8/7 still have sầu the "Reboot and select proper boot device" error after you are setting the correct boot order or it is originally in correct boot sequence, please try doing the next attempt.

Set Correct Partition Active (Recommended for Legacy BIOS Users)

To mix active sầu partition correctly to lớn remove "reboot & select proper boot device Windows 10/8/7”, you’d better employ my-huawei.com Partition Wizard, a professional partition manager instead of Diskpart, because the former tool provides friendly GUI (Graphical User Interface) while the latter is a command-based utility.

To vày this work, you need to use my-huawei.com Partition Wizard Bootable Edition that can be got in all paid editions. Here use Pro Edition as an example & just get it from the following button.

Buy Now

Step 1: Download, install and register the program on another computer to lớn get the main window below. Here, please choose Bootable Media on the top right corner.

See more: Hướng Dẫn Làm Nhiệm Vụ Thiên Môn Trận Võ Lâm 2, Nhiệm Vụ Thiên Môn Trận

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Step 2: Choose a USB flash drive sầu or DVD/CD disc for the bootable media creation. For more information, view the post How lớn Build Boot CD/DVD Discs & Boot Flash Drive with Bootable Media Builder

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Step 3: Then, start the unbootable computer from the created bootable disc to get the main interface of my-huawei.com Partition Wizard.

Generally, the partition storing Windows boot files should be set active, & it is always the system reserved partition. However, if you install Windows 10/8/7 khổng lồ an appointed partition, there will be no system reserved partition, and your C drive should be set active sầu.

Therefore, you need khổng lồ view the status of each partition to lớn see whether there is an active sầu partition already. If not, select the system reserved partition or C drive and choose the Set Active feature. However, if a wrong partition is phối active sầu, you"ll need to lớn mix this wrong partition inactive sầu at first, and then set the correct partition active.

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Step 4: At last, cliông chồng the Apply button to make all changes performed.


After restarting your computer such as ASUS, Acer, Gigabyte, Toshibố, etc., the issue – “reboot và select proper boot device Windows 10/8/7” could be fixed.

Rebuild MBR (Recommended for Legacy BIOS Users)

Step 1: In the main window of my-huawei.com Partition Wizard, please select the disk where Windows is và clichồng the Rebuild MBR feature.

Step 2: Cliông xã Apply to lớn make this change performed.

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Then, you should be able lớn start Windows. Otherwise, you"ll need to lớn make the next reboot and select proper boot device fix.

Set BIOS to lớn Best Defaults

Setting to Defaults usually loads mặc định values which are optimized for performance, without risking stability. Many users gave feedbaông xã & said this helped them fixed the issue "Reboot và select proper boot device Windows 10/8/7" flawlessly.

For different types of motherboards, their names vary, which might be Get Default Values, Load Optimized Defaults, Load Optimal Defaults, etc.

If all attempts above failed to lớn fix reboot and select proper boot device error, most probably Windows boot files or the system itself has corrupted. Then, you"ll need lớn fix boot or reinstall Windows, but both require Windows installation disc.

Fix Windows Boot Files

Prepare a Windows repair disc & boot the ASUS, Acer, Toshitía or Gigabyte PC from the disc. Then, go lớn the following interface và clichồng Repair your computer lớn enter the Windows Recovery Environment.

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Then, run Command Prompt và type the following commands.

For Legacy BIOS users:

Bootrec /fixboot Bootrec /rebuildBCD

For UEFI users: bcdboot C:windows

And each type should be followed by a press on the Enter key. Then, you can quit from Comm& Prompt lớn try restarting your system. If the computer says reboot and select proper device, you"ll need khổng lồ reinstall Windows.

Top Recommendation: Delete System Reserved và EFI Partition Windows Can"t Boot – Fixed

Reinstall Windows 10/8/7

As we know, reinstalling Windows will erase all files saved on the boot partition (it is always the drive C). So, what if there are important files saved in this drive? We believe sầu all of you would want to lớn transfer them out at first, but how lớn bởi the transferring when Windows is unbootable?

my-huawei.com ShadowMaker, a professional backup software, enables you to lớn back up your crucial files easily when the computer says insert boot truyền thông in seleted boot device.

Free Download


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Step 1: Firstly, you also need to lớn create bootable media with its Media Builder và restart the PC from the media.

Step 2: In the my-huawei.com PE Loader page, run my-huawei.com ShadowMaker.

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Step 3: In the Backup page, choose files you need to baông xã up and the target path you want to lớn save sầu the files lớn.

Step 4: Start the backup by hitting Bachồng up Now.

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After that, you you can reinstall Windows without worrying about losing important files. And the error "Reboot & Select proper Boot device or Insert Boot Media in selected Boot Device and press a key" error should be fixed.

However, if you failed lớn reinstall Windows or the new Windows is still unbootable, your hard drive sầu might have sầu corrupted.

2 Special Cases

At last, we will give sầu 2 cases where the "Reboot and Select proper Boot device" error is occasionally fixed. If all solutions above failed to lớn work, try methods shown in these 2 cases, which might be useful for you.

Case 1: the user tried lots of methods found from the internet, including change boot order, rebuild MBR, set BIOS to lớn defaults, & fix boot, but the error still exists. Then, he took out battery of COMS and then put it back. After that, the error is fixed magically.

Case 2: one user solved the problem by enabling CSM (Compatibility Support Module) in BOIS.

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Final Words

Now, it"s time to lớn try these methods out to fix "Reboot & Select proper Boot device or Insert Boot Media in selected Boot device và press a key" error in Windows 10/8/7.

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Should you have sầu problems during the issue fixing, just feel free lớn liên hệ us by leaving a comment below or sending an email to lớn . We will try our best lớn help you out.


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