Software⏱️ 3 min read📅 2026-06-11

How to Fix: When AC Power is disconnected, atibtmon.exe throws a Runtime error

Error with atibtmon.exe and runtime error when AC power is disconnected.

Quick Answer: Try updating the legacy driver or using a different driver version.

📋 Table of Contents

  1. ⚠️ Common Causes
  2. 🛠️ Step-by-Step Verified Fixes
  3. 🎯 Final Words

The error 'atibtmon.exe throws a Runtime error' occurs when the AC power is disconnected, affecting users of Dell XPS Studio 16 with ATI mobility Radeon HD 3670 and Windows 8 PRO 64 bits. This issue can be frustrating as it prevents the installation of the legacy driver and causes system instability.

To resolve this problem, we will explore possible root causes and provide step-by-step solutions to help users avoid the error.

⚠️ Common Causes

  • The primary reason for this error is a compatibility issue between the ATI mobility Radeon HD 3670 graphics card and the Windows 8 PRO 64 bits operating system. When AC power is disconnected, the system may not be able to properly handle the driver installation, leading to a runtime error.
  • Another possible cause is a corrupted or outdated driver, which can cause the atibtmon.exe process to fail when trying to install the legacy driver.

🛠️ Step-by-Step Verified Fixes

Updating Graphics Drivers

  1. Step 1: Step 1: Open the Device Manager on Windows 8 PRO by pressing Win + X and selecting Device Manager. Expand the 'Display Adapters' section and right-click on the ATI mobility Radeon HD 3670 driver. Select 'Update Driver'.

Using Legacy Driver Installer

  1. Step 1: Step 1: Download the AMD Catalyst Legacy Win8 installer from the provided link (http://support.amd.com/us/kbarticles/Pages/catalystlegacywin8.aspx).

🎯 Final Words

To resolve the 'atibtmon.exe throws a Runtime error' issue, users can try updating their graphics drivers or using the legacy driver installer. If the problem persists, it is recommended to seek further assistance from AMD support or a professional IT technician.

Did this fix your problem?

If not, try searching for specific error codes.

🔍 Search Error Database

❓ Frequently Asked Questions

🛠️ Related Fixes

How to Fix: Pc crashes shortly after launching game (rainbow

Fix Pc crashes shortly after launching game (rainbow six siege). Compl

How to Fix: Installing an APK on a locked down phone

Installing an APK on a locked down phone: Try using a rooted device, e

How to Fix: New PC build- no signal and no clue

Fix New PC build- no signal and no clue. Complete troubleshooting guid