If you’re seeing the “Operating System Not Found” error on your Sony VAIO E-Series laptop, don’t panic. This common issue usually relates to incorrect boot order, corrupted recovery options, or misconfigured BIOS settings.
In this article, we’ll walk you through the exact steps to fix this error using the BIOS and boot options available on your VAIO laptop.
Why This Error Occurs
This issue can appear due to several reasons:
- The BIOS is unable to detect a valid operating system.
- Boot priority is set incorrectly (e.g., network or USB boot is prioritized over the hard disk).
- Windows Recovery environment is corrupted or inaccessible.
- UEFI/Legacy boot mode mismatch.
Steps to Fix the Issue
Step 1: Turn Off the Laptop
First, press and hold the power button to turn off your Sony VAIO laptop completely.
Step 2: Access VAIO BIOS and Boot Options
- Press the Assist button (usually located near the power button) on your laptop.
- This will boot the laptop into VAIO Care Rescue Mode.
- You’ll see several options like:
- Start BIOS Setup
- Launch Recovery
- Hardware Diagnostics
- Start from Media/USB
Do not select “Recovery” right now, as it might also show the same “Operating System Not Found” error.
Step 3: Open BIOS Settings
- Select the “Start BIOS Setup” option using your arrow keys.
- You can also access BIOS directly by pressing F2 repeatedly during startup (after turning on the laptop).
Step 4: Configure Boot Settings in BIOS
- Once inside BIOS, navigate to the Boot tab.
- Locate the Boot Mode — if it’s set to UEFI, and your OS was installed in Legacy mode, this mismatch can cause the error.
- Change the Boot Mode:
- Press Enter on Boot Mode.
- Switch from UEFI to Legacy, or vice versa depending on how your OS was installed.
- Most users find Legacy works well for older systems.
Step 5: Change Boot Priority
- Under the Boot Priority or Boot Order, make sure the internal hard disk is set as the first device.
- If USB or Network Boot is listed above the hard disk:
- Select it using arrow keys.
- Press F5/F6 or +/- keys to move the hard disk to the top.
Step 6: Save and Exit
- Press F10 to Save and Exit the BIOS setup.
- Confirm the prompt by selecting Yes.
- The laptop will reboot.
Step 7: Check if the System Boots
Once the BIOS changes are saved, your system should start normally if the operating system is intact.
If you still see the error:
- Try entering the BIOS again and switching the Boot Mode between UEFI and Legacy.
- If the OS still doesn’t boot, consider using a bootable USB drive to repair or reinstall Windows.
Recovery Option Doesn’t Work?
Sometimes, using the recovery option also shows “Operating System Not Found.” In such cases:
- The recovery partition might be corrupted.
- BIOS settings may still be misconfigured.
That’s why manually changing the boot mode and priority in BIOS often resolves the problem more reliably.
Conclusion
The “Operating System Not Found” error on Sony VAIO E-Series laptops is usually a BIOS configuration issue. By accessing the BIOS through the Assist button or F2, adjusting the boot mode, and prioritizing the hard drive, you can get your system running again.
If the OS is corrupted, you may need to reinstall Windows using a bootable USB. But for most users, a quick BIOS fix does the job.
Tags:
Sony VAIO boot error, operating system not found fix, VAIO E-Series recovery, BIOS settings Sony laptop, fix boot issues Sony, Sony assist button BIOS, change boot mode VAIO
Hashtags:
#SonyVAIO #OperatingSystemNotFound #LaptopFix #BIOSSettings #VAIORecovery #BootError #TechGuide
