If you are using Windows systems and often reinstall your operating system for yield faster and better computer, not be surprising that these "operating system not found" error message:
Operating system not found.
Missing Operating System
Setup did not find any hard disk drives installed in your computer.
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What causes the system has found an error with this?
When the computer starts, the system BIOS is on the hard disk to boot. If no system, the computer does not know where to go, so it gives a message for troubleshooting. The main reasons why the Windows operating system is missing are presented.
1. The computer input / output system (BIOS) does not detect the hard disk.
2. The hard disk is damaged.
3. Master Boot Record (MBR) on the hard disk is broken. Note that some third-party programs or disk operations can damage an MBR.
4. An incompatible partition is marked as active.
5. A partition that contains the MBR is no longer active.
How to fix a system that has not found an error
You can always ask your mother or hardware manufacturer HDD if appropriate, or get help from Microsoft support. Depending on your own situation, you could try the following methods to correct the system not found error itself. It's not as difficult as you think.
Solution 1: Make sure your hard drive is detected by the BIOS
When the computer is starting, you can press a function key to enter the BIOS. The function key varies from different manufacturers, usually F2, F12 or Del. Please check the onscreen instructions. Make sure your hard drive is recognized in the list. If the hard drive is not detected, you may have problems with the hard drive, refer to the hard drive manual for more information, or contact the manufacturer for assistance.
Solution 2: Recovery Console
Windows systems offer fixmbr command to repair the system is not problem if it is caused by a damaged MBR. If you're using Windows XP, you need Windows XP startup disk or CD of Windows XP to use the Recovery Console. When either of these two is inserted, restart the computer. When the "Welcome to Setup" screen appears, press R to start the Recovery Console. Once the recovery console is open, type your administrator password (blank by default) and fixmbr input for fixed MBR.
Note that the fixmbr command can damage your partition table (part of MBR) if there is a hardware problem. You can also create partitions inaccessible by this command. It is highly recommended to backup your data before using this fixmbr command.
Solution 3: The final resolution to fix the OS not found issue
Same as above presented, active or incompatible MBR partition on the inactive partition also cause the operating system not found problem. Wondershare Data Recovery offers an intuitive and friendly interface so you can repair the operating system not found error. When starting any computer with a virtual system, you can troubleshoot and even install a new Windows system quickly. Here is the general guide to fix the system no problem with Data Recovery offers. Note that the solution 1 is a necessity. First make sure that your hard drive works correctly.
Step 1. Create Bootable CD / DVD or USB Data Recoveruy clicks.
Step 2. Insert the CD, DVD or USB drive, and reboot your computer.
Step 3. Select the "Boot from Data Recovery" in the boot menu to enter the system option.
Step 4. Select "Windows Recovery" click MBR recovery and operating according to the instructions on the screen.
Step 5. When MBR recovery is complete, restart the computer to see if the operating system not found problem if resolved.
Step 6. If not, the system is the error persists, reboot again and go to Data Recovery Genius Disk / Partition to check whether the configuration of the active partition is right. If not, mark the partition as Active appropriate to your operating system's BIOS is.