Symptoms
- Resolution reverts to a lower or wrong setting after restarting
- Happens again after waking from sleep
- Resolution resets after a Windows update
- Manually resetting it works until the next restart
Likely causes
- CommonGeneric display driver instead of the correct oneWindows may fall back to a basic driver that doesn't retain the monitor's proper native settings.
- CommonWindows Update overwriting driver settingsUpdates sometimes reset display drivers to default.
- PossibleFaulty cable intermittently affecting EDID detectionIf the monitor's identification data isn't read reliably, Windows may not remember the correct resolution.
- PossibleMultiple monitors with conflicting settingsA multi-monitor setup can sometimes reset one display's resolution when detecting the others.
What to do
- Install the manufacturer-specific graphics driver rather than relying on the generic Windows driver.
- After each Windows Update, check Display Settings and reset the resolution if needed, and note whether it's a recurring pattern tied to updates.
- Try a different, known-good video cable to rule out inconsistent EDID detection.
- In Display Settings, manually set the resolution and click 'Keep changes' when prompted, rather than letting it auto-revert.
- If using multiple monitors, disconnect all but one temporarily to see if the resolution holds steady with a single display.
- Check the graphics card manufacturer's control panel for a custom resolution profile you can save and force the system to use.
Tools and parts
- None
Replacement video cableSearch: “DisplayPort or HDMI cable”
When to call a pro
If a proper driver and a good cable don't stop the resets, and it happens on multiple monitors, a technician can check for a deeper graphics card or motherboard issue.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.