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Boot Issue: Start PXE over IPv4. How to Fix it?

  • Posted at 2021-09-28 19:53:16
  • By Prefixx Team

Boot Issue: Start PXE over IPv4. How to Fix it?

PXE booting is when your system starts over the IPv4-based network. This way of booting for your PC is a method of last resort. It also indicates that other devices for booting were not available such as the hard disk. 

Before looking at the solution,  let’s delve into PXE and IPv4.


Preboot Execution Environment or PXE is used to start the PC over a client-server interface before using the PC image. To execute PXE network boot, Trivial File Transfer Protocol (TFTP) and Dynamic Configuration Protocol (DHCP) is used. In most cases, PXE is already enabled but it can be paused from BIOS.

PXE over IPv4: Means What?

When your PC attempts to start on LAN, you might see the following error message:

“ Start PXE over IPv4”

This message pops when your computer cannot start from your drive. It happens due to incorrect BIOS configuration. You will see this error message when other booting devices are unavailable. You have to set it as the default boot device.

Here are a few ways to fix the start PXE over IPv4 error in Windows 11/10:

Method #1- Disable Legacy Support and Secure Boot

These are the main reasons why your PC’s boot order changes. Knocking them out is the only way to fix this problem. 

Use the following steps to disable both Legacy Support and Secure Boot.

1. Startup your PC in BIOS.
2. Click on the Security tab with your arrow key.
3. Pick Secure Boot. Click on disable. 
4. Now go to Legacy Support. Disable it. 
5. Save the new settings.
6. Exit BIOS.

Restart the PC. A message may pop stating your Boot Order was changed. It may ask for the display number. If nothing is visible, finish the restart process. However, if it is requesting the display number, do the following:

1. Input the requested numbers and select Enter. The entered digits will not be visible. 
2. Use the power button to turn off your PC. 
3. To enter BIOS, click the Boot tab. Choose Boot from the hard drive. A few settings are different according to the OEM.
4. Restart. 

Method #2- In BIOS, Disable Wake on LAN

If you have tried Method #1 and failed, this option is usually successful, more so than other methods. 

1. Turn your PC OFF. Select Start on the bottom left-hand corner of your screen. Select Power. Pick Shut Down. 
2. Now let’s restart. Click the BIOS key to enter BIOS as the system boots. You will find the BIOS key on the screen. “ Press….to begin Setup” may appear on the screen.

Function keys (F1, 2, 10), Esc, and Del are BIOS keys. Perform this step quickly because the message will disappear immediately. 

3. You will find the Wake on LAN function under a tab in BIOS firmware. The exact location varies according to the manufacturer. There is no special way to locate this. Most users find it near Power options or something with a similar name, i.e. Advanced Settings. 
4. Once Wake-On-LAN is found, click on it and choose disable. 
5. Go onto the Exit screen. Save all changes. This will automatically go to boot.

Method #3- Upgrade BIOS

If there is an underlying problem with your PC’s BIOS, a complete BIOS upgrade is necessary. This is a complicated process. The method for updating BIOS varies across manufacturers. 

Please do the following steps carefully to see the desired results.

1. Type ‘msinfo’ into the search field on the bottom left-hand corner of your screen. This is located in your Start menu. 
2. Under the Processor model, the BIOS version is listed. Write this version on paper or copy and paste it onto a Word document or text file. 
3. Determine if your PC was pre-built, bundled, or manually put together using several individual components. This step is vital because you do not want to install a BIOS version that is only usable for one component in the PC. It can cause major system issues. 
4. Prepare your device to update. For example, if you are using a laptop, ensure the battery is completely charged. To update a PC, a UPS or uninterrupted power source is used. You do not want your PC to shut down because of a power cut. 
5. Adhere to the instructions set up by various device manufacturers like Dell, Gateway, MSI, etc. 

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