Fix 0xC01E050D in Windows: Monitors Not Detected (Real Fix)

This Windows error means your PC lost track of monitors during a display switch. I'll show you how to force a clean re-detection without reinstalling drivers.

Quick Answer (for advanced users)

Press Win + Ctrl + Shift + B to reset graphics driver, then power-cycle all monitors. If that doesn't work, run DISM /Online /Cleanup-Image /RestoreHealth and sfc /scannow from an admin command prompt, then restart.

Context – Why This Happens

I saw this error for the first time on a Dell Precision workstation last year. Client called me saying his second monitor just went black after he switched to HDMI input on his own. The error code 0xC01E050D means the graphics subsystem lost track of which display is which. It's a Protected Video Path (PVP) issue – Windows thinks you disconnected a monitor that's supposed to be there for HDCP content playback. Real-world triggers: plugging/unplugging cables while system is awake, switching monitor inputs, or running a game that uses exclusive fullscreen after changing display resolution.

Fix Steps (Try in Order)

Force a graphics driver reset
Press Win + Ctrl + Shift + B together. You'll hear a beep and screen will flicker. If you see both monitors come back, you're done. This resets the driver without a full restart. Works maybe 30% of the time.
Full power cycle
Shut down your PC normally. Unplug all monitor power cables for 30 seconds. Plug them back in, then boot up. This clears the EDID cache in the monitors. Most common fix – had three clients fixed by this alone.
Run SFC and DISM
Open Command Prompt as administrator. Type:
DISM /Online /Cleanup-Image /RestoreHealth
Wait for it to finish (might take 10-15 minutes). Then type:
sfc /scannow
Restart after both complete. This fixes corrupted system files that mess with display detection.
Clean install graphics driver
Download the latest driver from your GPU maker's site. Use DDU (Display Driver Uninstaller) in Safe Mode to remove the old one completely. Then install fresh. I do this for stubborn cases – about 1 in 5.
Check monitor cable connections
Swap cables or try different ports. I once spent an hour troubleshooting only to find a DisplayPort cable was half-pulled out. Make sure you hear a click when plugging in.

Alternative Fixes If the Main One Fails

Change monitor input source manually – Cycle through inputs (HDMI, DP, VGA) on each monitor's OSD menu. Sometimes Windows gets confused by auto-detect.
Disable HDCP in GPU settings – On NVIDIA, go to Control Panel > Display > Change resolution > Set HDCP to off. On AMD, it's in Radeon Settings > Display. Not ideal for Netflix but stops the PVP error.
Rebuild display registry keys – This is for advanced users only. Open Registry Editor, navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers, delete the Configuration and Connectivity subkeys. Restart. Windows will rebuild them on next boot.
Roll back Windows update – If the error started after a recent update, go to Settings > Update & Security > View update history > Uninstall updates. Remove the most recent quality update.

Prevention Tip

Don't switch monitor inputs or unplug cables while the PC is active. Always put the PC to sleep first, then change cables. Also keep graphics drivers up to date – but don't install beta drivers on work machines. I've seen this error pop up after a loose HDMI cable gets bumped during cleaning. Simple habit saves headaches.

Had a client last month whose entire print queue died because of this same error – turned out a monitor was in power-save mode while the PC thought it was active. We fixed it by pressing the monitor's physical power button once.