My Dell Windows 10 is stuck in safe mode and has no signal

Thank you for your reply.

I'm glad your last problem was alleviated!

For the new problem, you can look at the following methods

Method 1: Completely reset the BIOS:

Press Delete/F2/F10 (exact key varies by motherboard) repeatedly while booting to enter the BIOS.

Find Load Fail-Safe Defaults (or similar option) and load it, this step is more conservative than “Optimized Defaults”.

Press F10 to save and exit, and observe if the recovery is still triggered.

Method 2: Manually adjust key settings (if reset does not work):

1. HDD Mode: Go to Advanced → SATA Configuration, make sure the mode is AHCI (if it was RAID/IDE before, you need to keep the same).
2. Secure Boot: Go to Boot → Secure Boot and try to disable it.
3. CSM (Compatibility Support Module): Enable CSM Support and set it to Legacy+UEFI (especially for old hard disks or systems).
4. Fast Boot: Disable this option to exclude initialization conflicts.

Disclaimer: If you will still try to modify the BIOS settings, please backup your important data first.

Method 3: Repair the system boot file

1. Boot from the installation media: Insert the Windows installation USB flash drive, boot the computer and press F12/Esc to select Boot from USB flash drive. Select Repair Computer → Troubleshooting → Advanced Options.
2. Perform an automatic repair: Select Startup Repair and wait for the tool to automatically scan and repair the boot problem.
3. Manually rebuild the boot record (if the automatic repair fails): Select the command prompt and type:

bootrec /fixmbr

bootrec /fixmbr

bootrec /scanos

bootrec /rebuildbcd

4. Reboot when finished.

We look forward to hearing from you again!

Kirito|Microsoft Community Support Specialist

Thank you very much for your reply!

Thank you for your support and understanding

The link to that post：Windows 10 Hacked; CPU useless - Microsoft Community

You can return to this thread again at this link

Thank you and hope you have a great day!

Kirito|Microsoft Community Support Specialist

Hey there! Thanks for the advice! I can see a monitor interface again. Turns out my monitor was plugged into my motherboard instead of my graphics card.

Now I have a new problem. Computer is asking about a BIOS? And when I picked Load Optimized then Boot, I get a "PC recovery notice before it then shuts off by itself. Anything I can do? Sorry for blurry photo.

First, thanks Amsara; this was the only way I could figure out how to get back to Kiroto, also about Windows 10 on a Dell. Hope you are up and running again, as I am.

Hi Kiroto - This is Susan who had the problem with the hijacked (or whatever) Windows 10 on my Dell CPU. I couldn't figure out how to find my post and reply to tell you that your excellent instructions worked. Really appreciated your help.

I finally had time this weekend to test them, shred old data in anticipation of sending my machine to recycling, but I persisted, patiently, and am up and running again. Thank you again and again.

Hello AmStara and welcome to the Microsoft Community!

Thank you for your feedback and it would be an honor to assist you with this issue!

This may be due to a problem with the display settings, a graphics card driver issue, or a conflict with some hardware configuration.

You can try the following methods to try it out

Method 1: Try a different video output interface

1. Check if your graphics card or motherboard has multiple video ports (e.g. HDMI, VGA, DVI, DisplayPort).
2. If you are currently using a video card interface, plug your monitor into the video output port on your motherboard (you will need to unplug your discrete graphics card). If it can be displayed, the problem may be with the video card driver or the video card itself. If it still does not display, please continue to the next step.
3. Try using a different monitor to test if the problem is with the monitor.

Method 2: Force Safe Mode to be withdrawn

Safe Mode may be continuously locked via msconfig, you can try to force terminate the Safe Mode setting by the following methods.

A: By using the Ctrl+Shift+Win+B key combination (to reset the graphics card driver)

  Press Ctrl+Shift+Win+B, this will restart the graphics driver. If there are no problems with the monitor and the graphics card is OK, the screen may reboot.

B: Manually rewriting the boot file

  1. Create a Windows installation media that supports booting:

     On another functioning computer, use the [Download Windows 10](https://www.microsoft.com/en-us/software-download/windows10/ "www.microsoft.com") Download the Windows 10 Media Creation Tool to make a bootable USB or DVD.

  2. Boot a computer that is already stuck in Safe Mode:

     Insert the boot disk into your computer and go to BIOS (usually press F2, Del or F12) and set it to boot from the USB device.

  3. Launch the “Command Prompt”:

     Select “Repair Computer” (instead of a fresh install).

     Go to Troubleshooting > Advanced Options > Command Prompt. 

  4. Remove the Safe Mode setting:

     Type the following command and enter:

bcdedit /deletevalue {current} safeboot

 5. Then type and enter:

exit

 6. Restart the computer and see if it boots normally.

Method 3: Try resetting the BIOS

Your BIOS settings may be causing the problem, try resetting it:

1. Press F2/Del to enter the BIOS when rebooting.
2. Locate and execute the “Reset to Default” or “Load Default Settings” option (the terminology may vary from motherboard to motherboard).
3. Save and reboot.

If you are unable to access the BIOS, try the following:

1. Turn off the computer and disconnect the power.
2. Open the case and locate the CMOS battery (a small round button cell) on the motherboard.
3. Unplug the CMOS battery, wait 5 minutes, and then plug it back in.
4. Plug it in and turn it on.

We look forward to hearing from you again!

Kirito|Microsoft Community Support Specialist