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How To Fix Acer Laptop Boot Loop with Boot-Repair

Ubuntu 4

If you are an Acer laptop user and have been experiencing a boot loop issue with the message “Reset System” appearing in the upper left corner, you are not alone. This is a common issue that users face and can be quite frustrating. But don’t worry, this article will guide you through the process of fixing this issue using a tool called Boot-Repair.

Quick Answer

To fix an Acer laptop boot loop issue, you can use a tool called Boot-Repair. First, create a UEFI bootable USB stick using the dd command. Then, reinstall Ubuntu in UEFI mode. If the issue persists, you can try using Boot-Repair to repair any boot issues.

Understanding the Problem

Before we dive into the solution, it’s important to understand what’s causing the problem. Your Acer laptop uses a system called UEFI (Unified Extensible Firmware Interface) for booting. When installing an operating system like Ubuntu, it is crucial to ensure that it is installed in UEFI mode. If legacy mode is turned on in your BIOS, Ubuntu may not work correctly and cause the boot loop.

Creating a UEFI Bootable USB Stick

The first step in resolving this issue is to create a UEFI bootable USB stick. This can be done using the dd command in the terminal. Here’s how:

  1. Download the Ubuntu ISO file. You can download it from the official Ubuntu website here.
  2. Insert a USB stick into your computer.
  3. Identify the device name of your USB stick. Open a terminal and run the command lsblk. This will list all the block devices (hard drives, USB drives, etc.) connected to your computer. Identify your USB stick from the list (e.g., /dev/sdb).
  4. Create the bootable USB stick. Use the dd command to create the bootable USB stick. Replace /dev/sdx with the device name of your USB stick and /path/to/ubuntu.iso with the path to the downloaded Ubuntu ISO file:
sudo dd if=/path/to/ubuntu.iso of=/dev/sdx bs=4M status=progress && sync
  • if stands for ‘Input File’, which is the Ubuntu ISO file in this case.
  • of stands for ‘Output File’, which is the USB stick.
  • bs stands for ‘Block Size’, which determines how much data is read and written at once.
  • status=progress shows the progress of the operation.
  • sync ensures all writing to the device has finished before the command returns.

Note: Be very careful when using the dd command, as it can overwrite data if used incorrectly.

Reinstalling Ubuntu in UEFI Mode

Once you have created the UEFI bootable USB stick, you can proceed with reinstalling Ubuntu in UEFI mode.

  1. Restart your laptop and enter the BIOS settings. How to do this varies by model, but it usually involves pressing a specific key (like F2, F10, or Del) during startup.
  2. Adjust the boot priority list. In the BIOS settings, find the boot priority list and make sure that “ubuntu” (or the name of your USB stick) is at the top.
  3. Save the changes and exit the BIOS settings.
  4. Boot from the USB stick and reinstall Ubuntu in UEFI mode.

Using Boot-Repair

If the boot loop issue persists even after reinstalling Ubuntu in UEFI mode, you may need to use Boot-Repair. Boot-Repair is a simple tool to repair frequent boot issues. You can download it from here.

To use Boot-Repair, boot your system from the Ubuntu live USB, install Boot-Repair in the live session, and then run Boot-Repair. You will be offered several options; click on the “Recommended repair” button. Once the repair is done, note the URL ( This URL will be useful if you still have issues and need to seek help from the Ubuntu community.


Fixing a boot loop issue on an Acer laptop can be a complex process, especially if you are not familiar with the inner workings of your computer. However, by carefully following the steps outlined in this article, you should be able to resolve the issue. If you still encounter problems, don’t hesitate to seek help from the Ubuntu community or a technical expert. Remember, there’s no problem that can’t be fixed with a little patience and the right knowledge.

How can I identify if my Acer laptop is experiencing a boot loop issue?

If you see the message "Reset System" appearing in the upper left corner of your screen and your laptop keeps restarting without fully booting up, it is likely experiencing a boot loop issue.

Can I fix the boot loop issue without using Boot-Repair?

While Boot-Repair is a recommended tool for fixing boot loop issues, there may be alternative solutions depending on the specific cause of the problem. However, using Boot-Repair is a reliable and straightforward method that has helped many users resolve this issue.

Can I use a different tool instead of Boot-Repair to fix the boot loop issue?

Boot-Repair is specifically designed to address boot-related issues, and it has proven to be effective for many users. However, if you prefer to use a different tool, you can explore other options like GRUB repair or manually editing the boot configuration files. Keep in mind that these methods may require more technical knowledge and can be more complex.

Will reinstalling Ubuntu in UEFI mode erase my data?

Reinstalling Ubuntu in UEFI mode should not erase your data, as long as you choose the option to reinstall rather than a clean installation. However, it’s always recommended to back up your important files before making any changes to your system, just to be safe.

How can I enter the BIOS settings on my Acer laptop?

To enter the BIOS settings on an Acer laptop, you typically need to restart your laptop and press a specific key during startup. Common keys to access the BIOS settings on Acer laptops include F2, F10, and Del. The specific key may vary depending on your laptop model, so refer to your laptop’s user manual or search online for the correct key to enter the BIOS settings.

What should I do if I encounter problems during the boot loop fixing process?

If you encounter any problems or have further questions during the boot loop fixing process, it’s recommended to seek help from the Ubuntu community or consult a technical expert. They can provide guidance and assistance based on your specific situation. Remember, it’s always better to seek help rather than attempting to fix complex issues on your own if you are unsure.

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