Random (white) bar started flashing only on the left side of the screen.

troubleshooting display anomalies: addressing vertical white bars on ASUS TUF Gaming FX505DT laptops

Introduction

Display issues can be perplexing and disruptive, especially when they occur unexpectedly. Recently, some users of the ASUS TUF Gaming FX505DT have reported seeing vertical white bars flashing intermittently on the left side of their screens. Understanding the potential causes and troubleshooting steps can help users resolve or identify whether the problem is software- or hardware-related.

Description of the Issue

Affected users have observed white vertical bars appearing on the left edge of the display. These bars may span the entire vertical length or only a portion of it. Interestingly, the phenomenon seems to depend on specific screen content or colors, as attempting to reproduce the issue by displaying fullscreen colors often does not trigger the problem. The user who reported this issue had already updated all display drivers to the latest version, indicating that driver issues are unlikely the cause.

Visual Evidence

Screenshots and videos provided by the affected user show the white bars appearing during browsing activities. For example, scrolling down a webpage causes partial white vertical bars to emerge on the left side of the display. A video demonstration illustrates the behavior clearly, showing the white bars as the user drags a screenshot across the screen, with full length vertical bars appearing intermittently.

Potential Causes

Diagnosing display anomalies involves considering multiple factors:

1. Software Glitches
2. Corrupted or incompatible display drivers
3. Browser rendering issues (if the problem occurs during web browsing)

4. Operating system glitches

5. Hardware Problems

6. Loose or damaged display connections
7. Faulty display panel or internal graphics hardware
8. GPU or integrated graphics card issues

Troubleshooting Steps

To effectively identify or resolve the problem, follow these systematic troubleshooting steps:

1. Check Hardware Connections
2. Power off the laptop and disconnect it from power.
3. Carefully open the back panel (if comfortable and skilled) and inspect the display cable connections for looseness or damage.

4. Reseat the display cable if possible.

5. Test External Displays

6. Connect the laptop to an external monitor or TV using HDMI or DisplayPort.
7. Observe if the vertical white bars appear on the external display as well.

8. If the issue persists externally, it points to a graphics hardware or driver issue. If the external display is normal, the problem is likely with the internal screen.

9. Update or Roll Back Graphics Drivers

10. Ensure all drivers