Do you receive theYour VAIO failed to start Windowserror message when booting the Sony VAIO laptop?
What causes this problem?
How to fix it?
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If not, kindly dive into this post from theMiniTool Website.
We will explain the reasons and provide several solutions to the Sony VAIO not turning on issue.
Why Is My Sony VAIO Laptop Not Turning on?

You will see a black screen or theYour VAIO failed to start Windowserror message.
It prevents the Windows operating system from loading.
When the Sony VAIO laptop failed to start, you may wonder why it happens.

How to Deal with Sony VAIO Not Turing On?
In this section, we will introduce several solutions to fix your Sony VAIO laptop not turning on problem.
But before trying these fixes, you should do some basic checks to rule out the problem.

Therefore, refer to this quick tutorial to change the BIOS boot mode.
Step 1: Turn off your laptop and press theASSISTbutton.
Then it’s possible for you to see a screen with theYour VAIO failed to start Windowserror message.

Step 2: SelectStart BIOS setup, navigate toBoot, and clickBoot ModeunderBoot Configuration.
Step 3: Change the Boot Mode and pressF10to save the change.
If theLegacymode is selected, change it to theUEFImode.

Exit the BIOS page and check whether the Sony VAIO laptop not powering on issue is solved.
Fix 3: Run Windows Startup Repair
Startup Repair is a built-in tool in Windows.
By performing a startup repair, you may boot your PC properly without any issue.

Step 1: Boot your VAIO laptop with aWindows installation media.
Step 2: Press any key when the startup screen pops up.
Then customize the language and clickNext.

Step 3: ClickRepair your gear>Troubleshoot>Advanced options>Startup Repair.
Step 4: slide in your account password and tap on theContinuebutton.
After that, the computer will automatically repair the problems that prevent Windows from booting.

you’re gonna wanna wait for the process to complete and start your VAIO laptop.
Therefore, you’re free to perform a system restore on your VAIO computer to cancle these changes.
Here are two ways for you to do it.

Lets follow the detailed guides.
Step 2: Click onStart troubleshooting (recovery)and select language and keyboard layout to continue.
Step 3: In the pop-up window, clickTroubleshoot>VAIO Recovery> choose your operating system.

Way 2: viaWinRE
Step 1: Boot your laptop with a Windows installation media.
Step 3: ClickRepair your rig>Troubleshoot>Advanced options>System Restore.
This process will take a while, just wait patiently and your problem will be solved.
Step 1: Power off your laptop and press theASSISTbutton to enter the error screen.
Step 2: ClickStart BIOS setupand navigate to theSecuritytab.
Step 3: SelectFactory Defaultand press theEnterkey to confirm your action.
In this case, youd better reinstall Windows.
Reinstallation will erase everything on your system drive and reset the system to its original state.
Therefore, see to it to perform adata backupfirst.
Step 3: Set the bootable USB flash drive as the first boot gear and boot from it.
Step 5: ClickInstall nowand follow the on-screen instructions to finish the setup configurations.
In this situation, it is necessary to back up your essential files after solving the problem.
Here, we highly recommend MiniTool ShadowMaker, a freeWindows backup software.
With the backup image of data, it is easy to restore them.
For higher security, you’re able to add password protection to the backups.
In addition, it supportscloning HDD to SSDandmoving Windows to another drive.
Now, get MiniTool ShadowMaker by clicking the button below.
you’re able to enjoy the free trial for 30 days.
For an advanced edition, just clickhere.
Then follow us to learn how to back up files with it.
Step 1: Launch MiniTool ShadowMaker and enter its main interface.
Step 2: Go to theBackuptab > clickSOURCE>Folders and Files.
Step 3: grab the files it’s crucial that you back up and clickOKto go back to theBackuppage.
Step 4: ClickDESTINATIONand choose a target location to store your backup.
USB flash drive and external hard drive are recommended.
Step 5: At the bottom of the right corner, selectBack Up Nowto execute the backup task.
If you chooseBack Up Later, the delayed backup task will be displayed on theManagepage.
yo remember to back up your important data to prevent data loss due to other errors.
We will reply to you as soon as possible.