This blue line you see is likely a display calibration or diagnostic indicator from Dell. It often appears after the system boots to check settings or fix issues. It doesn’t mean your computer is broken, but it’s a normal part of startup processes.
This blue line you see is likely a display calibration or diagnostic indicator from Dell. It often appears after the system boots to check settings or fix issues. It doesn’t mean your computer is broken, but it’s a normal part of startup processes.