A screen that flickers only in games can be caused by a cable, variable-refresh setting, display driver, overlay, or unstable GPU. First determine whether the entire monitor blanks, only the game window flashes, or the image tears. These symptoms point to different fixes.
Step 1. Try another cable and monitor port, and connect the display directly rather than through a dock. Check whether the monitor's own menu also flickers; if it does, investigate the monitor or power source.
Step 2. In Settings > System > Display > Advanced display, record the refresh rate and resolution. Temporarily choose a supported lower refresh rate. Test the same game for several minutes.
Step 3. Test windowed and full-screen modes. If flicker occurs only in one mode, disable third-party overlays and capture tools one at a time.
Take a short recording or screenshot during the problem. If the flicker is visible in the recording, the game or graphics pipeline may be involved. If the recording looks normal while the physical monitor flashes, focus on the cable, port, panel, refresh handshake, or power. This is a clue rather than a definitive hardware test.
Step 1. Identify the GPU in Device Manager. Install a driver from the PC or GPU manufacturer and restart. If flicker began after a driver update, use Roll Back Driver when available.
Step 2. Check the game's own display settings. Toggle variable refresh or V-Sync one setting at a time, keeping a note of the original values. Avoid changing several graphics controls simultaneously.
Step 3. Watch GPU temperatures and fan behavior during a short test. If other 3D apps also flicker or crash, investigate power and hardware rather than repeatedly reinstalling the game.
Run Windows Update, verify game files in the game launcher, and test another monitor. A storage-health tool does not repair display flicker; use one only if Windows also reports disk I/O errors. Back up files before hardware replacement or Windows reset.
On a laptop, check whether the symptom occurs on battery, AC power, or both. Review the manufacturer's graphics-switching and display firmware updates for the exact model. If the screen also flickers before Windows loads, software settings inside the game are unlikely to be the whole cause.
Change one variable at a time: cable and port, refresh and display mode, overlays, driver, then hardware. This makes the cause observable instead of hiding it beneath multiple simultaneous fixes.