If the hard drive is not detected properly, you should reset the BIOS settings to default values.Ģ>. When you get into the BIOS’ main screen, you need to check whether it detects the hard drive, and whether the boot order is right.Ĥ.

It can be any of the following: Esc, Del, F2,F8, F10, or F12.ģ. The key depends on the computer manufacturer and computer model. To check the BIOS settings, follow these steps:Ģ. Since boot device not found or operating system is missing occurs when BIOS is unable to find the boot device, checking BIOS settings might be a good solution. Here we provide you three common ways to fix operating system not found in Windows 10/8/7.įix 1: Change or reset the BIOS configurationįix 2: Check hard drive is working or not This error may be caused by the following reasons:įix operating system not found for all major laptop brands However, if it is unable to find one, then, it will show you the error message “Operating System not found” or the error message “ Missing operating system”. When you boot your Sony Vaio or other brands PC, the BIOS tries to find an operating system on a hard drive to boot from. Why “operating system not found” happened? If not, you can refer to more solutions shown in the following content. After saved all changes, you can exit “ VAIO Care” mode by choosing “ Exit Setup”,Press “ Enter” -> Yes.Īs so far, we have repaired “operating system not found” on Sony Vaio successfully. Save all that have changed by select the tab “Exit” on Menu, choose “ Save Changes” -> Enter -> Yes.ĩ. In Extend Device Boot, change the value from “ Disabled” to “ Enabled”.Ĩ. Press “ Enter” and choose “ Legacy” to change the value.ħ. Here you need to get into “ Boot Configuration”->” Boot Mode”, and you can see the current is UEFI.Ħ. Choose “ Start BIOS setup”, or you can press F2.ĥ. The laptop will automatically go to “ VAIO Care” mode of Sony Vaio.ģ. Start laptop by holding the Assist button on the keyboard. Shut down laptop by holding the power button on the keyboard.Ģ. To fix the error “”operating system not found” on Sony Vaio, you can do as the following steps:ġ. How to fix error “operating system not found” on Sony Vaio?

What’s wrong with it? How can I fix it? Any help would be thanks.” I used it well,but recently, it shows an error when booting: operating system not found. “I have an older Sony Vaio Laptop, model VGN-NR280E, that was loaded with the Vista operating system. Error: Operating system not found on Sony Vaio

Sony vaio laptop windows 7