Lcd Built-In Self Test; Overview : Lcd Built-In Self Test (Bist); How To Invoke Lcd Bist Test; Epsa Diagnostics - Dell Latitude 3300 Benutzerhandbuch

5 Start the system.
6 While the system is starting up, press the Ctrl+Esc keys while holding the power button until the BIOS Recovery Menu dialog box is
displayed.
7 Click Continue to start the BIOS recovery process.
ANMERKUNG:
8 Select the path on the USB drive where BIOS recovery file is stored( root directory or "\") and follow the on-screen instructions.

LCD Built-in Self Test

Overview : LCD Built-in Self Test (BIST)

Dell laptop PCs have a built-in diagnostic tool that helps you determine if the screen abnormality you are experiencing is an inherent
problem with the LCD (screen) of the Dell laptop PC or with the video card (GPU) and PC settings .
When you notice screen abnormalities like flickering, distortion, clarity issues, fuzzy or blurry image, horizontal or vertical lines, color fade
etc., it is always a good practice to isolate the LCD (screen) by running the built-in self test (BIST).

How to invoke LCD BIST Test

1 Power off the Dell laptop PC.
2 Disconnect any peripherals connected to the PC. Connect only the AC adapter (charger) to the PC.
3 Make sure that the LCD (screen) is clean (no dust particles on the surface of the screen).
4 Press and hold D key and Power on the PC to enter LCD built-in self test (BIST) mode. Continue to hold the D key, until you see color
bars on the LCD (screen).
5 The screen will display multiple color bars and change colors on the entire screen to red, green and blue.
6 Carefully inspect the screen for abnormalities.
7 Press Esc key to exit.
ANMERKUNG: Dell ePSA upon launch, initiates a LCD BIST first, expecting an user intervention confirm functionality of the
LCD.

ePSA Diagnostics

The ePSA diagnostics (also known as system diagnostics) performs a complete check of your hardware. The ePSA is embedded with the
BIOS and is launched by the BIOS internally. The embedded system diagnostics provides a set of options for particular devices or device
groups allowing you to:
• Run tests automatically or in an interactive mode
• Repeat tests
• Display or save test results
• Run thorough tests to introduce additional test options to provide extra information about the failed device(s)
• View status messages that inform you if tests are completed successfully
• View error messages that inform you of problems encountered during testing
ANMERKUNG: The Enhanced Pre-boot System Assessment window displays, listing all devices detected in the computer. The
diagnostics starts running the tests on all the detected devices.

Running ePSA diagnostics

Invoke diagnostics by either of the methods that are suggested below:
Ensure that the Recovery BIOS option is selected in the BIOS Recovery Menu dialog box.
Diagnostics 151