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Introduction

If you’re trying to fix boot and couldn’t repair errors on Windows, you’ve probably seen a blue screen message saying Automatic Repair couldn’t repair your PC or Your PC did not start correctly. This issue often appears on Dell laptops and desktops, but it can happen on any Windows system.

Boot errors can be stressful. They stop your system from loading, and you may think your files are gone. The good news is that in many cases, simply adjusting the boot mode settings in BIOS can fix the issue instantly—especially when the system is stuck between UEFI and Legacy boot modes.

This article explains the exact steps to fix boot and couldn’t repair errors on Windows, why this issue happens, and what to do if it continues. You’ll also get a short video script section, FAQs, internal resources, and external trusted links.

Why Windows Shows “Automatic Repair Couldn’t Repair Your PC”

There are several reasons your PC might show this blue-screen error:

Why Windows Shows “Boot and Couldn’t Repair Errors”

Windows may fail to boot due to:

Incorrect boot mode (Legacy vs UEFI mismatch)
Corrupted bootloader
Damaged system files
Recent hardware changes
Improper shutdown
BIOS reset or update
Wrong drive selected as boot device

Most Dell PCs ship with UEFI boot mode + Secure Boot enabled. If these are changed, Windows cannot load properly. This is why your script works so well—it restores the correct boot configuration.

How to Fix Boot and Couldn’t Repair Errors on Windows (Step-by-Step)

Here is the complete article-style explanation of your script, expanded for clarity.

Step 1: Shut Down the PC Completely

Hold the power button for a few seconds until the computer turns off.
This ensures the system resets all temporary boot states.

Step 2: Start the PC and Continuously Press F12

Press the power button and immediately start tapping F12 repeatedly.

On most Dell systems, F12 opens the Boot Menu, allowing access to BIOS, diagnostics, and boot settings.

If F12 doesn’t work, try:

F2 (for BIOS setup)
ESC (on some models)

But for Dell, F12 is typically the correct key.

Step 3: Go to “Change Boot Mode Settings”

Inside the Boot Menu, you’ll see several options:

BIOS Setup
Diagnostics
Boot Options
Change Boot Mode Settings

Select Change Boot Mode Settings.

This section is important because improper boot mode is one of the most common reasons for “couldn’t repair” boot loops

Step 4: Select UEFI Boot and Turn Secure Boot On

Inside Boot Mode Settings:

Choose UEFI Boot
Enable Secure Boot ON

These settings ensure Windows loads using modern boot architecture.

Why these settings matter:

UEFI supports modern Windows installations
Secure Boot prevents unauthorized boot files
Dell systems expect UEFI + Secure Boot by default

Misconfigured settings often cause the blue screen you are trying to fix.

Step 5: Choose YES and Press Enter

When prompted:

Are you sure you want to apply these settings?

Select YES and press Enter.

This confirms your changes.

Step 6: Apply the Changes and Hit Enter Again

After confirming, press:

Apply Changes
Then press Enter

Your system will restart.

When it boots again, Windows will attempt to load using correct boot parameters, which helps fix boot and couldn’t repair errors on Windows.

Step 7: Your Computer Should Start Successfully

In most cases, especially with Dell PCs, correcting UEFI and Secure Boot resolves the issue immediately.

If the blue screen no longer appears, the problem was caused by:

Boot mode corruption
BIOS reset
A forced shutdown that changed the boot state
Windows mismatch between Legacy and UEFI

Your PC should now load normally.

Why UEFI Boot Mode Fixes These Errors

Many new laptops and desktops install Windows using UEFI mode instead of Legacy mode. When BIOS is reset or modified, the PC may try to start in the wrong boot mode.

This causes Windows to say:

“Automatic Repair couldn’t repair your PC.”
“Your PC did not start correctly.”
“Boot device not found.”

Returning to UEFI boot mode re-aligns the system with the correct bootloader, helping you fix boot and couldn’t repair errors on Windows quickly.

Learn more about UEFI from Microsoft (DoFollow):
https://learn.microsoft.com/en-us/windows-hardware/drivers/bringup/uefi

Boot Issues Commonly Seen on Dell PCs

Dell laptops often show this problem due to:

BIOS updates
Hard shutdowns
Mode switching during troubleshooting
Factory reset attempts
Boot order corruption

Dell also recommends using UEFI and Secure Boot for proper Windows 10 and 11 operation.

If Your PC Still Shows Boot Errors

If switching to UEFI doesn’t fix the problem, try these:

1. Run Startup Repair

Advanced Options → Troubleshoot → Startup Repair

2. Rebuild Bootloader using CMD

bootrec /fixmbr
bootrec /fixboot
bootrec /rebuildbcd

3. Check disk for corruption

chkdsk /f /r

(Internal link suggestion: /fix-pc-program-files-or-disk-issue)

4. Disconnect external USB drives

Sometimes they confuse the boot order.

5. Reset BIOS to Default

Use “Load Setup Defaults.”

Check out this Video if you have doubts

FAQs About HowFAQs About How to Fix Boot and Couldn’t Repair Errors on Windows to Fix Boot Couldn’t Repair Errors

Why does my PC say it couldn’t repair itself?

Usually because the boot mode is incorrect, the bootloader is corrupted, or system files are damaged.

Does switching to UEFI delete my files?

No. Changing boot mode does not affect your data.

Why does this issue happen mostly on Dell PCs?

Dell systems rely heavily on UEFI and Secure Boot. Any BIOS reset misconfigures this.

What if F12 doesn’t work?

No. Changing boot mode does not affect files.

Will this method fix all boot errors?

Most, but not all. Disk corruption or hardware failure may require additional steps.

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