How to Fix Computer No Boot Device Available Error Problem?

Computer Says No Boot Device Available?

Situation1: Hello, last night, when I was playing games newly downloaded last Friday, my computer just suddenly froze and made me have to reboot it with Ctrl + Alt + Del. However, that didn’t work. So, I reboot it into the PC BIOS interface and check the computer first boot device. And then, when I tried to restarting this computer again, the computer just said: "No boot device available". But, I did only check the computer boot device order and changed nothing there in computer BIOS interface. Why does it just report boot device not found? Is my computer internal hard disk corrupted? Is it possible for me now to perform damaged hard disk data recovery so that I can still use or access much important computer data left inside? What am I supposed to do now? How to fix this PC no boot device available?

Situation2: Hello, friends there! My computer went into a blue screen of death last night and it could not be restarted up till now. There is just a error message keeping popping out and saying: "No boot device available. Press F1 to retry or F2 to setup". What does that error message mean? I really know nothing about such PC boot device not found issues and the only thing I know is that my computer recently seems to be infected with some Trojan horse viruses. How serious is my PC problem? Is it still fixable? Is it still possible for me to recover data from computer 3TB hard disk?

Situation3: Hello, recently, to extend my computer space, I do have added a second internal hard disk to my Windows 7 laptop and set everything related well. However, when trying to boot it, I just get a no boot device available issue and cannot boot it properly as usually. Have I done something wrong? What can I do now to remove this PC boot device not found error problems? Thanks for any advice here! 
Hello, you guys have reset your computer boot device order, update your PC operating system or have some serious physical damaged with your computer hard disk before encountering this PC no boot device available error message? No matter what your answer is, such computer boot device not found error problems are often fixable. Just keep reading this article to check more detailed information below:

Why Does Your PC Say No Boot Device Detected?

Generally speaking, the computer "No boot device available" error message often means the computer operating system is not able to find the bootable hard disk or hard disk boot sector so that it just cannot boot itself up as usual. Hence, in such cases, as long as you figure out why your PC OS cannot find the needed bootable hard disk or hard disk boot sector, you do also find the right reasons behind this PC bootable device not found error problems. Also have no any clue? OK! Here are several major causes behind for you to take as references:

1).The computer just has been misled to boot from an unbootable hard disk or device.
Have you attached an unbootable CD/DVD/External hard disk/flash drive and wrongly set it as the boot device? Or have you changed your PC boot device order before this PC problem? In fact, in order to let your PC start smoothly, you are often supposed to set a bootable device, which often loads the PC operating system, in the boot order page of your PC. However, once you reset it unexpectedly or purposely or forget to set the bootable device as the first boot item after adding a second or more hard disks there, you do get such computer bootable device not found error problems. Therefore, the first thing you are supposed to do now is to check your boot device order in BIOS interface when you are stuck in similar computer no boot device available troubles. 

2).The computer internal hard disk get died or corrupted somehow.
As with this "no boot device available" error problem, the word "device" often indicates the computer internal hard disk. Therefore, when meeting the related problems, checking the state of the connected internal hard disk is also helpful to find out the actual reasons behind. Why? When your computer hard disk is really died or corrupted, your computer OS also can find no bootable device to reboot your PC and let it unworkable, right? Hence, when checking your PC boot device order well, you are also supposed to see whether your computer internal hard disk is also workable as before.

3).The computer boot hard disk MBR sector has damaged somehow.
Honestly, such PC computer boot device not found problems also could be caused by damaged hard disk MBR (Master Boot Record) sector, though this doesn’t happen often. Actually, the computer hard disk MBR sector is a PC boot hard disk section that can lead computer operating system to read needed information stored inside this drive and help PC boot successfully. Therefore, once this drive sector is damaged, you often will certainly get such PC boot device not found issues.

4).The computer Operating System is reset or damaged unexpectedly.
This computer no boot device available issue is also able to be aroused by unworkable operating system. Perhaps, your computer OS is just updated or damaged during the PC freezing? Of course, it also could be deleted, lost or corrupted in your daily use. No matter how and why it becomes unworkable, go check your PC OS files and folders could be a useful clue to fix this PC problem.

5).The computer is virus infected.
The possible Trojan Horse viruses hidden on your PC or internal hard disk are able to damage the hard disk MBR sector, essential computer OS files and folders, computer internal hard disk and even more stuffs to make you have to face this computer boot device not found problems. Hence, hope the possible hidden viruses or threats have not damaged everything yet.

What You Can Do to Fix PC Boot Device Not Found Error Issues?

Have found the actual reasons of this computer no boot device available error issues and wondered how to fix it successfully so that you can make your PC work as functionally as before? No worry! To restore your PC’s common use, go follow the below methods to take chances:
1). Go check or change the boot order of your PC.
Have reset your computer boot device order or added one or two extra hard disks to your PC before you do meet this computer no boot device available error? OK! Perhaps, you just have set an incorrect drive as the first device item. To remove this boot device not found error issues, merely go check and change your PC boot order like this:
Step1. Power on your computer and tap "F2" button to enter your PC BIOS interface.
Step2. Select "BIOS Setup Utility" option to choose "Advanced BIOS Features".
Step3. Highlight "Hard Disk Boot Priority" and check or reset your bootable hard disk as the first in the boot device list.
Step4. Press "Esc" to get back and restart your computer to have a try.
Generally, your computer will set up and run well as you expect when this computer no boot device available error problem really happens due to setting wrong boot device.

2). Diagnose, fix or change the computer internal hard disk.
After checking the computer boot device order well, the follow-up thing for you is to check the state of your installed boot hard disk. Honestly, many related computer boot device not found error issues are often caused by damaged or faulty internal hard disk. Hence, you are supposed to test your connected hard disk carefully.
Merely run CHKDSK to see whether there are some unfixable damages, like bad sectors or other physical damages. Or also go download diagnostic software to remove some simple hard disk issues. Of course, when your internal hard disk is mechanically damaged and cannot be recognized or used on any computer or machine, also do not hesitate to change another new hard disk for your PC.  
Moreover, if possible, go disconnect internal hard disk and try it on another PC to see whether it gets the same PC problems. In this way, you can surely know whether this internal hard disk is really corrupted or not. Of course, if possible, also attach another bootable external storage device to see whether PC could be restart smoothly as before.

Please Note: The computer hard disk could be logically or physically damaged and gets hard disk RAW file system, hard disk not formatted error, CHKDSK not available for RAW drive error or even unrecognizable hard disk error, etc, when you rudely shut down PC to remove the connected hard disk, and cause troublesome data loss troubles. Hence, remember to prepare PC hard disk data backups well in advance and also turn off your PC safely before extracting the PC hard disk.

3). Check, repair or reinstall computer Operating System.
When you are not sure whether this computer issues are aroused by PC OS problems, merely go check the operating system files and folders soon. If you do find that some important operating system folders and files are deleted or lost accidentally, go try to recover them with undelete file recovery software. If they are impossible be restored, also go try to update or reinstall your computer operating system to see whether you will also get the same no boot device available error message.

4). Go check or restore the MBR sector of your boot hard disk.
If you are sure that your internal hard disk is all right and this computer issues may be caused by damaged MBR sector of your boot hard disk, go check and restore your hard disk MBR sector. What you are supposed to do is only to download some special software to take chances. Of course, if possible, also open your internal and go check the state of your hard disk MBR sector by following some guide article searched online manually.

Please Note: Though the process of restoring the disk MBR sector does not erase or delete hard disk files without sign or warning, in case of any unexpected hard disk data loss troubles, you’d better firstly make sure to let everything important backed up well on another hard disk or device.   

5). Start antivirus software or format hard disk to remove all possible viruses clearly.
No matter whether this computer boot device not found error problems are caused by viruses or not, it is necessary to remove all possible hidden viruses or threats clearly, right? Just go run your installed antivirus software to detect and clean all suspicious stuffs at first. And then, also perform a full formatting process on this internal hard disk to clean everything dangerous completely.

Please Note: When you do have lost much important PC documents, games, programs, videos, photos and files after formatting hard disk to clean all possible vicious viruses completely, also don’t worry. Write no fresh data on this formatted hard disk and go recover data from formatted drive with format recovery software

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