LVUSD Tech Team Troubleshooting Guide

This guide outlines troubleshooting steps for the Acer B117 and B118 laptops.
Follow the Repair Procedure. Please note that replacing parts is usually a last resort as most problems originate in software.
This documentation will be updated as new problems and solutions are uncovered.

If you have any questions about the site or notice something missing, please fill out the Suggestion Form.

Table of Contents

Warranty Coverage

Acer’s 1 Year Warranty Does Not Cover: Damages caused by misuse, abuse, accidents, fire, theft, disappearance, misplacement, fluctuations and power surges, connections to improper voltage or incorrect electrical line voltage, viruses, malware, reckless, willful, or intentional misconduct.

For more information, please refer to the Full Acer Limited Warranty Agreement.

Repair Procedure


If the device is student-owned, any Out Of Warranty part replacements must be approved by the parent.

Perform the following steps in order, if possible. After each step, check if the issue has been resolved. Only send to the District Office if these steps don’t resolve the issue.

  1. Scan device Serial Number into UMC2

  2. Check for existing open ticket

  3. Open New Ticket if necessary, providing any issue details

  4. Check Warranty Status

  5. Check the indicator icon on the Ubermix taskbar, on the right

  6. Check BIOS Settings and Check Ubermix Version

    1. Update BIOS (Lazesoft) and/or Install/Update Ubermix if not the latest version

    2. Factory Reset if version is current

  7. Check for missing and loose screws, and replace or tighten as needed

  8. Check hardware connections/connectors

  9. Depending on the issue, follow the guides in the General Troubleshooting section

  10. Replace parts if necessary

    1. If device is student-owned and Out Of Warranty, check if new part will fix the issue prior to requesting approval. If repair is not approved, leave the old part in and return device to Media Center for return to student.

Determining Repair Cost

  • All Out of Warranty repairs are considered chargeable (Please see Warranty Coverage above to see details)

  • Physical damage, such as cracked plastic or screen, is chargeable (Exceptions are made on a case-by-case basis by Administration)

  • Liquid damage is considered to be physical damage, and is charged accordingly

Current Correct Configuration

BIOS Settings



  1. Information:

  • Version: 1.15

  1. Information:

  • Version: 1.07AD

  1. Main:

  • Network Boot: Enabled/Disabled1

  • F12 Boot Menu: Enabled

  • Touchpad: Basic/Advanced2

  • Wifi: Enabled

  1. Main:

  • Network Boot: Disabled

  • F12 Boot Menu: Enabled

  • Touchpad: Basic/Advanced2

  1. Boot:

  • Boot Mode: Legacy

  • Secure Boot: Disabled3

  1. Boot:

  • Secure Boot: Disabled3



B117s struggle with booting at times; if Enabled Network Boot doesn’t work, switch to Disabled, and vice versa.


Advanced should work on both B117s and B118s, but if the touchpad doesn’t function, try Basic.


A “Supervisor Password” must be set to change this setting from “Enabled” to “Disabled”. Follow Disable Secure Boot instructions.

Ubermix Version

Ubermix 4.1: ubermix 4.1lv5 (Ubuntu 18.04 LTS)

Battery Capacity Threshold

B117: 75%

B118: 90%