Fix for Windows XP, Vista, 7, 8, 8. Get the fix for Operating System not found boot error for Windows XP, Vista, 7, 8, 8. Windows 1. 0. This error is also very common for Sony VIO laptops, including T Series ultra books and S Series. About Operating System not foundThe following information on this error has been compiled by Neo. Smart Technologies, based on the information gathered and reported by our global network of engineers, developers, and technicians or partner organizations. Description and Symptoms. The error messages, alerts, warnings, and symptoms below are tied to this error. Symptom 1 Operating System not found error screen on startup. When a PC is booting, the BIOS tries to find a operating system on a hard drive to boot from. However, if it is unable to find one, then an Operating system not found error is displayed. It may be caused by an error in BIOS configuration, a faulty hard drive, or a damaged Master Boot Record. Operating system not found. Another possible error message is Missing operating system. This error is also very common on Sony Vaio Laptops. Causes of this Error. Feature. Resolved Issue or Enhancement. Defect ID. Automation Select to File activity Corrected an issue that caused an error when attempting to execute SQL. This error has been known to occur as a result of one of the following causes Cause 1 Bad BIOS configuration. Since this error occurs when BIOS is unable to find the operating system, checking the BIOS settings first is often a good solution. The BIOS configuration can become incorrect because of power outages, hardware errors or errors made when configuring the BIOS manually. Cause 2 BCD is damaged. Similar to the errors outlined in the BCD is missing and BCD is corrupt articles, this error can also appear when BCD becomes damaged. Cause 3 Faulty data cables. If the BIOS is unable to detect the hard drive, the faulty data cables are often to blame. Try to unplug, and then plug them back, or even replace them altogether and see whether the problem persists. Fixing Operating system not found on Windows. Windows Setup CDDVD RequiredSome of the solutions below require the use of the Microsoft Windows setup CD or DVD. If your PC did not come with a Windows installation disc or if you no longer have your Windows setup media, you can use Easy Recovery Essentials for Windows instead. Easy. RE will automatically find and fix many problems, and can also be used to solve this problem with the directions below. Fix 1 Rebuild BCD via Easy Recovery Essentials. Easy Recovery Essentials one click automated system repair corrects issues caused by corrupt BCD by recreating it from scratch on the active bootable partition. This is done automatically as part of the automated repair process, and requires no manual action or user intervention. Easy Recovery Essentials can fix many errors such as this automatically using its built in Automated Repair option. Easy. RE is currently available for Windows XP, Vista, 7 and 8 and can be downloaded and created on any PC. Download Easy Recovery Essentials. Make sure to note your Windows version XP, Vista, 7 or 8 before you download Easy. RE. This guide can help you identify what version of Windows you have installed. Burn the image. Follow these instructions on how to burn the bootable ISO image very carefully, as making a bootable CD can be trickyAlternatively, these instructions explain how to create a bootable Easy. RE recovery USB stickdrive. Boot up your PC from the Easy Recovery Essentials CD or USB you created. Once Easy. RE is running, choose the Automated Repair option and click Continue. Choose Automated Repair in Easy Recovery Essentials. After Easy. RE scans your computers drives, identify and select the drive letter for your Windows installation from the list, and then click on the Automated Repair button to begin. Choose the drive associated with the Windows installation youre trying to repair. Easy Recovery Essentials will start analyzing the selected drive for problems. Easy. RE will test for and attempt to automatically correct errors with the disk, partition, bootsector, filesystem, bootloader, and registry. No intervention is required, as Easy. REs repair is fully automated. Easy Recovery Essentials searches for errors and makes corrections to the selected Windows installation. Once the process is complete, Easy. RE will report its findings. Click on the Restart button to reboot your PC and test the changes. The Operating System not found error should now be fixed as your PC begins to load. Windows, booting up successfully. You can download Easy Recovery Essentials from here. Fix 2 Change or reset the BIOS configuration. Since this error often occurs when BIOS is unable to find the hard drive, checking BIOS settings might be a good solution. To check the BIOS settings, follow these steps Restart the computer. Press the necessary key to open BIOS menu. This key depends on the computer manufacturer and computer model. This is usually listed on the first screen that appears on the monitor. It can be any of the following Esc, Del, F2, F8, F1. F1. 2. If the screen shows multiple keys, find the key to open BIOS, setup or BIOS menuCheck the BIOS main screen to see whether it detects the hard drive, and the boot order to see if it is set correctly. Here are the screenshot examples of BIOS main screen, with a hard drive and a CD ROM that were properly detected, and a boot order screen that has a hard drive in the first position. BIOS main settings screen. BIOS boot order screen. If the hard drive is not detected properly, consider replacing the data cables, or resetting the BIOS settings to default values. Here are the steps to reset BIOS settings Enter the BIOS screen by following the steps outlined above. Find the Reset to default or Setup default option it could be either a hotkey, or an option in the menu. Choose the reset option, and answer Yes when prompted for a confirmation. Then, select the Exit Exit saving changes option. BIOS reset defaults screen. Fix 3 Run Automatic Repair. The Windows Automatic Repair may recover certain boot process related errors in some cases. Here are the steps to access the Automatic Repair from an install disc Boot from Windows install disc. Click Next in the setup page after selecting proper language, time and keyboard input. Click Repair your computer and select Troubleshoot. Click on Advanced options. Select Automatic Repair and select your operating system. Here is an example of what the PCs startup repair should look like once the BOOTMGR file is properly restored Corrupt bootmgr fixed by Startup Repair. Fix 4 Rebuild the BCD using bootrec. Just as with the BOOTMGR is Missing error, rebuilding your computers BCD can fix boot loading issues. Here are the steps to rebuild the BCD Boot from the Windows install disc. Click on Repair your computer after selecting proper language, time and keyboard input. Select the Windows installation drive, which is usually C, and click Next. Choose Command Prompt when the System Recovery Options box appears. Write the following command and press Enter afterwards. If the program finds a Windows installation and asks whether it should add it to the boot list, press YHere is an example screenshot of what the PCs console output should look like once Bootrec is done rebuilding the BCD. Bootrec utility results screen. Fix 5 Reset BIOS settings on Sony VAIO Laptop. The e. Support section of Sony. VAIO laptop is showing this error Remove all removable media, e. USB flash drives, CDs, DVDs etc. Reset BIOS settings back to default. Here are the steps to reset VAIOs BIOS settings if you have Windows XP, Vista, 8 or 8. Remove any peripheral devices you may have connected to the laptop. Restart the computer and press the F2 key when the VAIO logo appears. When the BIOS setup screen appears, press the right arrow key to select the Exit menu section. Select Get Default Values by pressing the down arrow key. Press Enter at Load Optimized DefaultsIn the Load Optimized Defaults make use of the arrow key to select Yes and then press Enter. Again use the arrow keys to select Exit Save Configuration and press Enter. Here are the steps to reset VAIOs BIOS settings if you have Windows 7 Press and hold the Assist button after you restarted the laptop until the VAIO black screen appears on the monitor. When the VAIO Care Rescue Mode screen appears use the arrow keys to select Start BIOS setup F2 and press Enter. Press the F9 key to reset the VAIOs BIOS to the original default values.
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