Screen flickering in Windows

• Estimated time: 5 min
• Easy
• Low risk

This is the first test: it separates two paths that need different actions.

1. Press Ctrl + Shift + Esc to open Task Manager and observe both that window and the rest of the screen while the fault occurs. If it also flickers, Microsoft identifies the driver as the likely cause. If it stays steady while the rest flickers, an incompatible app is more likely.

2. Note when it began and what changed: driver, update, or application. If flickering already occurred before Windows loaded, use the outside-Windows branch; do not force this comparison into a universal explanation.

• Estimated time: 15 min
• Easy
• Low risk
• Administrator required
• Restart required

The sequence depends on whether a new driver preceded the problem.

1. You can try Windows + Ctrl + Shift + B to reset the graphics driver. The display may change briefly. If improvement is temporary, retain that result and continue investigating the driver; do not interpret it as a broken GPU or repeat the shortcut indefinitely.

2. If it began immediately after a driver update, check Device Manager > Display adapters > device > Properties > Driver for Roll Back Driver. Save work before changes and restarts; if rollback is unavailable, do not download old versions from unknown sites.

3. Without a preceding update that justifies rollback, look for a compatible update through Windows Update or the computer/graphics manufacturer. Then repeat the Task Manager comparison. A change that does not improve the test does not justify switching versions endlessly.

• Estimated time: 15 min
• Easy
• Moderate risk
• Data loss: Possible

The contrast favors an app, but does not automatically identify which one.

1. Save work and close one suspect app at a time, starting with those installed or updated when the problem began. Observe whether flickering stops without changing the driver at the same time.

2. If one app changes the result, check its official update. If it remains the cause and you can do without it, preserve its data and use normal uninstallation; retest before removing other apps. If no comparison identifies it, request support with the result rather than removing programs at random.

• Estimated time: 5 min
• Easy
• Low risk

An observation before startup broadens the problem to the display, connection, or computer.

1. Record whether you saw it at the startup logo or in firmware, without changing BIOS settings to force a test. With an external display, a safe comparison using a compatible cable or display can narrow down the failing combination; it does not identify the GPU by itself.

2. Give that observation to computer or display support. Do not keep reinstalling Windows drivers to explain a fault reproduced before Windows is involved.