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1: Resolving Laptop LCD Lines,
Fuzzy, Color, or Blurry Issues
Verify that the BIOS and Video drivers are the latest available from Support.Dell.Com Website, for more information refer to Dell Knowledge Base article, "How to Use the Drivers and Downloads Website"
Test the LCD in the System Setup (BIOS).
To enter the computer BIOS Setup Screen perform the following steps:
At the first text on the screen or when the Dell logo appears, tap <F2> until the message Entering Setup appears.
Some older Dell computers use an alternate key sequence instead of to enter System Setup. These key sequences include:
<Fn>+<F1> (laptop computers only)
<Fn>+<Esc> (laptop computers only)
If you observe the same issue on the setup screen, it is not an issue with the Operating System, it is a hardware issue, Contact Technical Support/font>.
Run the Laptop Built-In Self-Test (BIST).
To run the Built-In Self-Test perform the following:
Turn the computer off.
Press and hold the D key while pressing the power button. This will start the BIST.
The screen will display multiple flashing colors. Look for lines, distortion, or any other video issues you have observed.
The laptop will restart when the test is finished.
Click the following link to see an English-only video of this test How to Run LCD BIST Video .
If the LCD BIST passes, proceed to Step 4, otherwise Contact Technical Support.
For information on Beep Codes/Error Codes refer to Dell Knowledge Base article, Pre-Boot System Assessment (PSA) Diagnostics and Error Codes For Dell Computers
Connect to an external monitor (if available), for the different types of external monitor ports that may be available on your computer refer to (Figure 1).
Display Port is a new digital standard for connecting monitors to computers and has the capability to provide a scalable digital display interface with optional audio and high-definition content protection (HDCP) capability. Display Ports usually resemble USB Ports with one side angled.
A Display Port cable should be used if Display Port connectors are available on both the computer and the monitor.
Digital Video Interface (DVI) is the digital standard for connecting monitors to computers. DVI connections are usually color-coded with white plastic and labels.
DVI cables provide a higher quality signal than VGA cables. A DVI cable should be used if DVI connectors are available on both the computer and the monitor.
Video Graphics Array (VGA) is the analog standard for connecting monitors to computers. VGA connections are commonly color-coded with blue plastic and labels.
A VGA cable should be used if DVI connectors are not available on either the monitor or the computer.
Once it's connected, press and hold down the FN and press F8, this should display the screen on the external monitor.
When the external monitor does not work or you did not have one to test with, Contact Technical Support.
When the external monitor does work it may be an issue with the Operating System. Verify that all the drivers are the latest available from Support.Dell.Com Website, for more information refer to Dell Knowledge Base article, "How to Use the Drivers and Downloads Website". When that does not fix the issue the Operating System may need to be reinstalled, for more information refer to Dell Knowledge Base article, "How To Restore or Reinstall Microsoft Windows on a Dell Computer".
Check for visible damage to the LCD. To identify any damage not visible to the ***** eye, ensure you run LCD BIST on the system (refer to Step 3).
If the LCD has damages which is not covered by any applicable statutory warranty, limited hardware warranty and/or Dell-branded service, including Complete Care / Accidental Damage service, there may be a cost incurred by you for the replacement of parts.
Oct 04, 2012 |
Dell Computers & Internet