Reboot and Select Proper Boot Device – Explained With Solution

“Reboot And Select Proper Boot Device” is a BIOS Error message and it only occurs when your computer system’s BIOS is having some problem to find the system drive or maybe some other bootable devices. And actually, you can get this error message in any installed Operating System in any computer devices, like your Laptop or Desktop PC.

What Is This Error Means?

Mainly there is a chip soldered on your PC’s motherboard called “BIOS Chip” and this chip is fully responsible for starting your computer system from the beginning.

 photo 42190013297502742_zpsnb1nzkdt.jpgIf you don’t know, your Operating System is installed in your computer’s hard disk drive and that BIOS Chip is the one, who start that Operating System from your hard disk and make it running by using the boot volume.

By showing the error name “Reboot and select proper boot device” or “Insert boot media in selected boot device and press a key” your bios is just trying to say, it isn’t able to recognize your computer system’s operating system drive and if you don’t have any drive connected to your computer’s mainboard then maybe you should need to connect one now and install an operating system in it. Or otherwise, your computer’s screen will always show that error message on the POST display.

Just continue to read if you do have an OS (Operating System) installed in your system’s drive;

Why do we continually seeing this error, again and again? 

 photo ID-100134007-min_zpsscviisgt.jpgNormally this error mainly occurred when we remove or disconnected our OS Drive from the computer’s mainboard, but it’s possible that it can also occur even if we don’t touch our systems drive.

Yes, it’s possible because sometimes our system’s primary storage device cable connection get loose automatically, like your hard disks or SSD’s connection loose its grip and become not responding, or maybe it’s also possible that your computer’s BIOS gets automatically reset too, and by reset its possible that your system’s BIOS forgot their boot selection setting and isn’t able to boot your main system’s drive, mainly the one where your OS is installed.

If you don’t know about the Boot Selection setting, then actually it’s a BIOS setting menu where we select and arrange the storage drives connected to our computer and tells BIOS to boot (boot means start in system’s language) which particular bootable device at first or last.

And there is one more reason for this error to shows up on your computers screen even your system’s drive or BIOS is working perfectly. Actually, this one is the highly possible reason why you are getting this error and that is, the corrupted Operating System of your computer, or the corrupted Boot Volume of your Operating System.

In any condition, you can fix your computer or laptop easily. So let’s see what’s happen to your computer by following the ‘Troubleshooting Guide’ given below.

#First Thing First

Just like I said, normally when our computer’s starts, it scan every storage device connected to the computer and if it finds anything bootable connected to your mainboard even through the USB, besides your main system drive, then it’s possible it changes the boot sequence itself and the result you’ll seeing this error on your screen.

remove usb to solve 0x0000000aSo, just remove everything connected to your computer’s USB port. Mainly your External Hard Drive, Pen Drive or USB Disc Drive.

If problem not solved, just continue;

#Troubleshooting System’s Drive

 photo Hdd-icon-min_zpslql5x0tc.pngAs I said, it’s totally your System’s drive related problem and now it’s important to troubleshoot your computer’s OS Drive in order to make things back to work.

So, the first thing which I wanted to suggest is to check your computer’s hard disk drive or solid state drive is connected properly in your computer or not, and checking the bootable connected devices status in BIOS is the easiest way to do it and that will definitely going to ensure you about the drive is working or disconnected.

To open your laptops or desktops BIOS Menu, you’ll need to hit the Del or F2 key on the keyboard again and again right after when you start the computer system. If your computer is Powered ON right now then you’ll need to turn it OFF and then again turn it ON to do the Del or F2 key pressing procedure because you can only do that when your computer’s first black wallpaper type screen appears.

It’s possible that your computer doesn’t open the BIOS Setup screen even after hitting the Del or F2 key and sometimes it’s expected because it’s possible that your computer is having its own predefined key to press to the BIOS Menu.

Actually, you can check that predefined key on your computer’s start screen as shown in the picture given below.

 photo phoenixbios_001_zpsrexsfblp.gif

After when your BIOS opens up, just go to the “Boot Setting” or some setting called “Standard Cmos Features” or maybe some other BIOS option which can show you your connected bootable devices like your system’s hard disk drive or SSD, which actually you can find easily.

@What To Do – If Your Hard Disk or SSD Isn’t Listed In Bios (Skip This Step If It Appears Listed):

If you aren’t able to find your OS’s Drive listed or mentioned in the BIOS Menu then it’s possible that your Hard disk Drive or Solid State Drive is not connected properly because of some faulty cable or maybe your drive got dead.

Both of things can be possible and to check that what’s happen to your computer, you’ll need to open your computer casing and change the SATA cable with some new one or otherwise you can also try to disconnect the SATA cable from the old slot and insert it in some another free SATA slot.

Before buying a new SATA cable, you can also try to change your storage drive’s power connector with some other free connectors which are normally coming from the PSU (Power Supply) of your computer, and one more thing you can’t replace any cable in laptops.

Sometimes replacing SATA Cable won’t works either or if your laptop is also having some problem to find the HDD/SSD in BIOS, in both conditions, it’s 99% possible that your HDD/SSD drive got faulty and to confirm that, you can also use some other HDD/SSD in your computer or laptop for testing purpose.  

If you found your HDD or SSD is dead, then you can check out these guide listed down below to help you out to find a new perfect drive for your laptop or computer.

 photo psu-sata-min_zpsl7udq9ip.jpg

@What To Do – If Your Hard Disk Appears Listed In Bios:

Listed HDD or SSD in BIOS indicates the drive is connected properly but the problem is still coming from some other possible reasons, which are:

  • BIOS “Boot Setting” Gets Changed.
  • Windows “Startup Process” Problem.
  • Windows Drive Got ‘Inactive’.
  • Windows “Master Boot Recode” Got Corrupted.

And to find out, your computer is suffering from which one of these conditions?, you’ll need to troubleshoot everything step by step to fix this “Reboot and select proper boot device” problem.

So, let’s find out:

#1 Fixing Boot Setting

 photo alert-min_zpsz7khasfs.pngBIOS Boot Setting is a configuration which allows your BIOS to boot a bootable device by starting it in sequence and it’s like, booting first a Hard Disk Drive to start an OS, or booting some CD-ROM disc to install an Operating System in a computer.

And by just changing the Boot Sequence or Boot Order for your system’s primary storage drive like your HDD or SSD, can fix this problem.

=> To Change Boot Setting:

  • Open your computer’s BIOS Setup:
  • Open the Boot Setting.
  • Set the 1st Boot Device Priority to your Hard Disk or SSD.
  • Save that setting and restart your computer.

If you wanted to check out the detailed steps about “How To Change the Boot Order” >>>Click Here<<

If changing Boot Setting won’t works for you, or your 1st Boot Device Priority Setting is already pre-defined to your HDD/SSD, in that case, you can move to the next step listed down below.

 photo boot order or boot sequence setting-min_zpsbqcdbblm-min_zpsfcqrf95z.jpg

Actually after this paragraph, this article only belongs to Windows Users because I only listed solutions for Windows Operating System and in case if you are having some another Operating system installed on your computers like Linux or something, then you can search the web and find the solution to fix your OS, and somehow if you still can’t able to find any solution to fix your OS, then you can also try to reinstall your OS and that will be definitely going to work for you. Or otherwise, if you are using Windows OS then just continue to read.

#2 Fixing Windows Startup Problem

 photo alert-min_zpsz7khasfs.pngWhen our Windows Operating System is having some problem to start itself then it’s surely possible this error can occur on your screen and stop the whole booting process, and the best way to fix this kind of problem, you’ll just need to perform a startup repair thing on your computer by using the Windows Operating Systems Installer Disc or USB what you use to install your OS.

I know it’s possible that you don’t have the same Installer Disc or USB at this time, but the thing is, you can use any Windows Setup Disc or USB on your computer, but the Version of the OS in the Disc or in USB needs to be same to the one what you are currently using in your computer, and by saying that, I actually means, use Windows 7 Setup Disc/USB if you having Windows 7 installed in your PC or use Windows 10 Setup Disk/USB if you’re using Windows 10 in your computer.

Link: Startup Repair – What It Is And How To Use It?

=> So, Let’s Overlook To The Procedure Of Startup Repair:

  1. First, you’ll need to boot your Windows Disk or USB by using the Boot Menu or Boot Sequence Priority.
  2. And right after when the “Press any key to boot from CD or DVD/USB” message appears on the screen, just press any key on the keyboard to continue or to boot the Windows setup.
  1. Now you’ll need to go to the “Startup repair” or “Automatic repair” option according to the version your windows because the procedure is quite different in different versions of Windows.

And now you can click on the toggle down below to expand the listed process steps according to the version of Windows.

Solution No. 2.1 - Startup Repair for Windows Vista & 7

Note: Move to Solution No.2.2 for Windows 8 & 10 Startup repair procedure.

Right after when the setup booting process gets done you’ll able the see the setup’s first menu options on the screen and in that options, you’ll just need to Click on the “Next” button and after that click on “Repair your computer” to start the “Startup Repair” utility tool.

After that, it will scan your computer’s drive and show you, your previously installed Operating System in the “System Recovery Options” box. Then select the listed OS and click on the “Next” button to start the Windows Startup Repair process, and if you can’t able to find your Windows listed in there, then you can skip this solution step and just move to the next one.

When the process starts, you’ll need to wait until the startup repair gets complete.

Solution No.2.2 - Startup Repair for Windows 8/8.1 & 10

Right after when the setup booting process gets done you’ll able the see the setup’s first menu options on the screen and in that options, you’ll just need to Click on “Next” and after that click on “Repair your computer” to start the “Startup Repair” utility tool.

After that, it will show you the three options but now you’ll only need to select the second one called “Troubleshoot”, and then right after when the second screen menu pops up, you’ll need to select the third option called “Advanced Options”.

Now select Startup Repair on Windows 10 or Automatic Repair on Windows 8 to repair your computer.

#3 Fixing Windows Inactive Drive

 photo alert-min_zpsz7khasfs.pngAn active partition is a partition of your computer’s HDD/SSD which is also known as bootable partition and that’s the partition who mainly contains your PC’s Operating System. Normally only one partition can be active at the time, like a C: Drive of your computer where normally Windows is installed.

Sometimes that partition got inactive due to some reasons like virus corruption or something and in that case we’ll need to reactive it in order to start our PC, and to do that you’ll have to open the CMD Command Prompt on your computer’s screen to input some commands in it to again reactivate your Windows drive to start the OS properly. I know your windows isn’t working and to open CMD even outside your OS you can follow this link which will show you >> 4 Different Ways to Run Cmd on Your Computer.

=> Open The Command Prompt On Your Screen & Then Type The Commands One By One What I’m All Listed Down Here:

  • Command #1diskpart
  • This command will start the Disk Part Utility in the Command Prompt and when the Diskpart starts, you’ll able to see the “DISKPART>” sign on the left side.
  • Command #2list disk
  • This will list all the connected drives of your computer.
  • Command #3select disk 0
  • In this step, you’ll need to select your main Hard Drive, mainly where your Window is installed. In my case, I’m selecting Disk 0 because that’s the only drive shown in my cmd and that’s also the one where my OS is actually installed.
  • Command #4list partition
  • This command will show you all the created partitions in that disk what you’ve selected. photo 4-listpartitions-min_zpsbfdtcukm.jpg
  • Command #5select partition 2
  • Normally we select “Partition 2” because in most cases that is your Windows partition, but the thing is it really doesn’t proves that you’ll always need to select the ‘2nd Partition’ because sometimes “Partition 1” can be our Windows Partition too. So, select the partition where your windows is installed and make sure you don’t select any 100 MB, 350 MB or 500 MB partition.
  • Command #6active
  • Now this command will make the partition active what you’ve selected in the above command. photo change-active-partiton-from-command-prompt-picture01_thumb-min_zpsc1fvz6aq.jpg
  • Command #7exit
  • After that, just restart your computer system and test it.

#4 Fixing Windows Master Boot Recode

 photo alert-min_zpsz7khasfs.pngThe MBR or I say Master Boot Recode, is the most important bootable data structure created in the OS Drive and that’s the thing which is fully responsible for guiding your system’s BIOS to compile which files to start the windows operating system. The MBR is actually created during the process of windows installation and needs to get repair only when it got corrupted.

It’s possible that your MBR got corrupted by some recently installed Software, Viruses or some Windows/Software updates and it’s better to get it repair as soon as possible.

=> Just Like The Above Solution You’ll Also Need To Use The CMD Command Prompt Again In Order To Input Some More Commands Which I’m All Listed Down Here:

  • Command 1# – Diskpart
  • Command 2# – List volume
  • Command 3# – Exit

Now you’ll need to find your Windows Drive letter in that list like mine is ’29 GB’ ‘D: drive’ as shown in the example picture and after when you find what your drive letter is, just use that drive letter in the next command which is given below:

  • Command 4# – D:  (Your Windows Drive Letter)  
  • Command 5# – Bootrec /fixmbr
  • Command 6# – Bootrec /fixboot
  • Command 8# – Chkdsk /f /r
  • Command 8# – Y
  • After when the “chkdsk” command gets completed, just restart your computer and I hope your problem is solved.
  • If not, then you can repeat this whole MBR repair process again and use this Bootrec /rebuildbcd” command before “Chkdsk /f /r” like in the given picture below:

@What To Do – If You Still Having This Problem:

If this problem still stuck on your computer then the only way to fix it, is to reinstall your windows operating system.

You can follow this link to see >> How To Install Windows On A Desktop Or Laptop Computer?

@What To Do – If You Fixed This Problem:

If you successfully fixed your computer or laptop, then it’s really great and if you don’t want to get this error ever again on your computer then i can highly suggest you to use a best registry tuner or cleaner in your computer because mainly this issue starts from a corrupted registry of your windows and there are so many of different reasons what can happen to corrupts your windows registry and most of are like, virus attack, installed spammy software etc.

If you don’t have any registry tuner or cleaner in your computer, then install a best in class cleaner in your PC to get the perfect performance and an error free system’s lifespan. Here are two top rated software’s what I recommend to all my websites guest users as listed below.

1st Best – SpeedZooka Registry Cleaner

2nd Best – CCleaner Professional

Still Finding Solution or Need Some Help ?
If you still can’t find your solution then maybe you’ll need to contact us and we will definitely gonna help you out by our technical support.
Click To Proceed To Desk’s Technical Support Page



  1. What to do when diskpart doesn’t show my disk? Only one 20Mb disk appears, even though my ssd is 120Gb. It’s showing in bios, but not in disk list. I have no way of going into disk management.

  2. Thank you very much, kind sir for taking the time and effort to create this very helpful guide! I was able to fix my problem thanks to you!

  3. Hoping you can help…
    Computer boots to windows 10 normally and will function normally for 30mins or longer then will suddenly reset (even if i am not using it at the time) and go to the reboot and select screen. If I power off and on using the on/off button, it will boot normally again. If I use the reset button it goes to the reboot and select screen. If I go to bios after resetting with the reset button, my hard rive is not shown at all. If I go to bios after a on/off button my hard rive is shown. Have done hardware isolation test except for power supply as I don’t have a spare. Any ideas? Thanks

  4. my system is asking for reboot and select proper device ,it all started when i tried to delete system reserved and then my system asked for restart and after that it is showing this,my dvd drive is not connected to the system ,so in this condition can u tell me the process to come up with this problem

  5. I tired to reinstall my OS system, and this happened. Under the BIOS, I can find my hard disk in the section of ‘advance’, however, I can’t find anything in the boot priority section but ‘Windows Boot Manager”. Please help me!

  6. I formar and install OS my SSD in desktop then when i put back in laptop it says everytime >Checking media presence then > Media not presented > “reboot or select proper boot device , but when i run my SSD in desktop its good.

  7. My dell xps 8500 with win10 is no longer booting and I get the message in intel rst option rom that raid0(cache) is disabled. I can also read that my samsung ssd 29.8gb shows type/status(vol I’d) as cache disk (0). How to I resolve. This problem occurred a few days after I installed a software called diamond video capture. Not sure if this is what caused the problem. Can you help

  8. THis was a very informative article, but didn’t quite touch on a problem I am having: After I edit the BIOS to the correct order, something changes it back. My only boot record is on C. Also installed is another internal SATA drive and an external USB drive. These other drives are not bootable. The system will work fine for a few days, and will restart without error and then, I get the iselect proper boot device. When I go into BIOS, USB is now 1st, WD internal HDD is 2nd and ST HDD,( bootable drive) is third. I change the order to the correct order and then the process repeats in a few days. I’m lost. anyone have an idea?

  9. Hi
    i hope u can help
    i just made a bootable flash disk for windows 8.1
    it works correctly with other devices in that the language selection first step shows but on trying to boot on my desktop,a black screen shows for language selection followed by a series of what seems like a cmd prompting one to press enter or esc.

  10. I have this problem when starting the PC, after seeing the black screen and those reboot lines, I reset the CPU and Windows 10 starts normally. I also tried startup repair but it says that it can’t repair after diagnose. In BIOS, my hard drive is set as priority 1 so I don’t know what is wrong with my computer.

  11. This helped so much, thank you! I got this screen after I got a hard drive failure and selected F2 and randomly changed things in the BIOS menu without understanding what I was doing. (Seemed like a good idea at the time, but no). I expect to get the hard drive failure error again soon (Dell Inspiron 2020 running Windows 10). Do you have a repair guide for that, or should I just buy a new computer?
    Thanks again for writing this in a non-technical way so people like me can follow it!

  12. I’m getting the ‘reboot and select’ message. Compaq PC with Windows 7 about 6 years old. If I switch off the power at the plug for ten seconds then switch on the PC again it starts OK. I did once get a ‘primary hard disc failure’ message but then it worked after I switched the power off and on. Hard disc on the way out? Anything I can do please?

Leave a Reply