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How to Fix Operating System Not Found Problem

If you are using Windows systems and often re-install operating system to get a faster and better computer performance, you won't be a stranger to these "operating system not found" error messages:

Operating system not found
Missing Operating System
Setup did not find any hard drives installed on your computer.

What causes System Not Found error to present?

When you computer is booting, the BIOS will find a system on your hard drive to boot to. If there is not any system, the computer doesn't know where to go, so it gives you a message for troubleshooting. Below are the main reasons why Windows operating system is missing.

1. The computer input/output system (BIOS) does not detect the hard disk drive.

2. The hard disk is damaged or corrupted.

3. Master Boot Record (MBR) on hard drive 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 A partition that contains the MBR is no longer active.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 System Not Found error

You could always consult your motherboard or hard drive hardware manufacturer if it's convenient, or get help from Microsoft support. Depending on your own situation, you could try following methods to fix System Not Found error yourself. It's not as hard as you imagine.

Solution 1: Make sure your hard disk is detected by BIOS

When the computer is booting up, you can press a function key to enter BIOS Setup. The function key varies from different manufacturers, usually F2, F12 or Del. Please look at the on-screen instruction. Ensure your hard disk is recognized in the list. If the hard drive is not detected, you may have issues with your hard disk, see the hard drive manual for more information, or contact the manufacturer to get helped.

Solution 2: Use Recovery Console

Windows systems provide FIXMBR command to repair system not found issue if it's caused by a damaged MBR. If you are using Windows XP, you need Windows XP Startup disk or Windows XP CD to use Recovery Console. When either of these two is inserted, restart your 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 input fixmbr to get MBR fixed.

Note that the fixmbr command may damage your partition table (part of MBR) if a hardware problem exists. You may also create inaccessible partitions by this command. You are highly recommended to backup your data before you use this fixmbr command.

Solution 3: The final resolution to fix operating system not found issue

As above introduced, an incompatible Active partition or MBR in the NOT active partition would also cause operating system not found issue. Wondershare LiveBoot gives an intuitive and friendly interface for you to fix operating system not found error. By booting up any computer to a virtual system, you can make troubleshoot and even install a new Windows system quickly. Here is the general guide to fix system not found issue with LiveBoot. Note that solution 1 is a must. First ensure your hard drive works properly.

Now, follow the steps below to do what you need.

Step 1. Create bootable CD or USB drive with Liveboot in one click

Run the program on your computer, insert a blank CD or USB drive into the computer and follow the how-to wizard to create a bootable CD or USB drive. Actually, what you need to do is to perform a click on the burnning button in the center, then other work will be automatically done.

system not found

Step 2. Start your computer with the bootable CD/USB

Insert the bootable CD or USB drive into the computer and restart it. When the system begins to load, press F12 immediately to go to the Boot Device Menu. Then select "Onboard or USB CD-ROM Drive", and you'll get a boot menu as follow. Click "Boot from LiveBoot" to get into your computer.

operating system not found

Step 3. Select "Windows Recovery", click MBR Recovery and operating as on-screen instructions.

After accessing the system, go to "Windows Recovery" and select "MBR Recovery" to get the solution.

boot file recovery

Step 5. When MBR Recovery complete, restart your computer to see whether the operating system not found issue if resolved.

Step 6. If system not found error still occurs, restart to LiveBoot again and go to Disk Management/Partition Genius to check whether the Active partition setting is right. If not, mark the proper partition as active partition so that the BIOS could find your operating system.

Learn more about Wondershare LiveBoot Boot CD

Product-related questions? Speak directly to our Support Team >>

yooni, you can use Wondershare LiveBoot to get your computer reboot again. Please follow the guide in the article above.
I was online and suddenly my laptop was hang for 1-2 mins so i just turn the button power off. and when i power on back, "operation system not found"appeared.. I'm sooo freak out right now. My laptop is VAIO E with Windows 7. Help me!
Thanks - that worked. You are awesome!
Yes, you only need to do it following the guide.
Is this software easy to use for those of use who know nothing about computers
Sorry, Herringsteve65, there is no trial version of this software. You need to purchase and have a try of it.
Hi Shiva.K, our technical support team will contact you to solve this problem ASAP. :P
Hi there, I burned the boot CD as well as U said and my Sony Vaio laptop boot from this but after "Loading the files" the screenshot of mine is not the same as the step 3 ...!!! It showed up a blue screen that has a picture of "USB /CD" and write some info about LiveBoot2012 above of it, top of that, "as it is the temp stored environment, so please don't save any documents or data on desktop or X: drive." !!!! what's wrong with it????!!! damp it.... :/
i have a old gate way pc none operation system not found error iam not sure what the problems is bios dose not detect the hard disk drive or the hard drive is damaged or corrupted or mbr is broken orthe partition on the mrb on longer active is there free burning sofe ware down load from a internet site i check out a site but thet want 60.00 for the soft ware can you help sh thanyou
What's the problem you've encountered, Diana?