Missing operating system (Windows 7): what to do to remedy the situation?

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2018-03-22 21:15:11

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Not often, but still sometimes users when the system receives a rather strange message on the screen: Missing operating system (Windows 7). What to do to troubleshoot it, many simply do not know. Let's try to fill this gap.

The Message Missing operating system: what is it?

So, consider crashing when the loading screen strings Missing operating system. What to do (Windows 7 on Board)? First of all, do not panic. Nothing really bad here, of course, provided the health of the hard drive and no physical damage.

missing operating system windows 7 what to do

The first step is simply to translate the inscription. Roughly speaking, tells about what is lost or missing “operating system” in the system partition, from which it is run. Of course, the reasons for the emergence of such situations can be quite a lot. Consider the most likely. In fairness, we note immediately that this failure can be observed not only in the popular “seven”, but in any other system, and its modification is, in General, and is not affected.

Causes of failure at boot

Speaking about what could cause such a failure, should pay attention to some of the most common reasons:

  • The BIOS does not detect the hard drive as the primary device with the operating system;
  • BIOS does not recognize hard drive due to physical damage;
  • Damaged master boot record;
  • Corrupted hard drive partition;
  • Corrupt Windows installation media (disk or stick).

Based on all the above, we will find a solution to fix the problem for each specific case.

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The Problem: Missing operating system (Windows 7). What to do? The laptop does not boot. The simplest solution

No matter How corny it sounds, very often the situation is caused by changing the BIOS settings when the priority of the device to start the computer or laptop is puts no hard disk (Hard Drive), and other media. Therefore, the message Missing operating system (Windows 7). What to do?

missing operating system what to do windows 7

Set a hard drive or logical partition which is the system (where Windows is installed) as the first device to boot from. The situation is simple: for example, if the first is a DVD drive, then the USB device that do not have system boot files, and hard drive is not at all the BIOS and did not see how to boot “Windows”.

Another thing, when such a failure can occur due to physical damage to the hard disk. To check its status, again, you will need to enter BIOS, then go to the Tools tab or something similar where you need to use a string for self test of the hard drive Hard Drive Self Test (of course, the section titles and commands may vary, but in General you need to look for something similar). If testing is successful, then the problem is not the hard drive, if on the contrary, it will have to be replaced or a special test with recovery, for example, by using a package HDD Regenerator.

Error Missing operating system (Windows 7): what to do with the boot record?

Quite often the problem can be related to the breach boot record that is responsible for the system start. Now it is in this perspective let us consider the failure Missing operating system. What to do (Windows 7 on a laptop or a stationary terminal)? To restore the boot record. But you need the installation disk or something like a Live CD to load the initial interface and then go to the command prompt through the recovery console. Note that the usual system restore from a checkpoint will not help.

So, after entering the command line you first need to check the system partition, which you need to specify what is presented in the image below.

missing operating system windows 7 what to do laptop

After checking we will add two commands restore the boot record, as shown below.

missing operating system what to do windows 7 on laptop

Now you can try to restart the system, pre-exposing the system partition as a priority for booting, or simply removing the CD from the drive. If all goes well, this can be completed. But sometimes this fails, and the user again sees on the screen the line Missing operating system (Windows 7). What to do in this case?

For the most correct remedy the situation will have to rewrite the boot record. Repeat all the steps to boot from the disk again and get to the command line. Add another team and make the entry as shown in the example below.

missing operating system windows 7 what to do

After this manipulation, certainly the system must boot without issues.

Other problems

Finally, if we talk about other possible solutions to the issue, should check the system for viruses with the help of samoigrayuschy tools like Rescue Disk. Maybe the problem is a loose connection of the ribbon cable to the hard drive (especially if several). In General, you should assess the situation. But in our case it affected the most common situation, and, as you can see, methods of their elimination is not so complicated.

However, if you give advice, of course, first and foremost, you should payattention to the BIOS settings, and also for possible wear or damage of the hard drive. As a rule, they in most cases cause such failures. As for the issues related to boot record, such situations are much rarer, however, they too should be considered. Perhaps at some point in the system critical error occurred, for example, the sudden shutdown of the computer or laptop due to power failure, power surges, etc.


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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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