| Symptom | Likely Cause | Solution | |---------|--------------|----------| | No sound after Windows update | Windows replaced Realtek driver | Reinstall Dell Realtek driver; disable automatic driver updates under System Properties → Device Installation Settings | | Wi-Fi keeps disconnecting | Wrong wireless driver version or power management | Device Manager → Network adapter → Properties → Power Management → Uncheck “Allow computer to turn off this device” | | Touchpad not responding | Missing or corrupted Synaptics/Alps driver | Download Dell Touchpad driver; check BIOS → “Pointing Device” enabled | | Battery drains fast | Missing Intel DPTF (Dynamic Platform Thermal Framework) | Install Intel DPTF driver from Dell | | Blue screen (IRQL_NOT_LESS_OR_EQUAL) | Corrupted graphics or storage driver | Boot safe mode → DDU graphics driver clean uninstall → Reinstall Dell graphics driver | | External monitor flickers | Intel Graphics Command Center refresh rate mismatch | Set refresh rate to 60 Hz; update Intel graphics driver |
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