Flickering screen with bars of lines on left hand side

Hi webgal318,

For us to come to a conclusion, we would need to perform few steps to identify the root cause. Here are the steps:

Run the LCD BIST. To run the LCD BIST (Built in Self-test):

• Power off the computer.
• Press and hold the D key on the keyboard while pressing the power button, then release both at the same time.
• This will initiate a Grey screen, then Red, then Blue, then Green, then White.
• Please check for any abnormal colors, lines, pixel or flickering

Check in BIOS:

• Power off the computer
• Restart the computer, tap F2 on the Dell logo
• Once you are on the BIOS screen, check if the screen flickers.

Please share the findings.

Inspiron N5040 laptop

I have the same serious problem as webgal318, of the screen flickering and breaking up.   It happens at random, but especially when starting up and if the screen is moved. 

I followed your instructions above and ran the LCD BIST.  The coloured screen appeared and did not flicker. In BIOS the screen didn't flicker but the colour faded in and out a little bit. 

Please would you advise me what you think is wrong and what I should do next to fix this.  Otherwise the computer works fine.

Thank you.

Hi Kangacat,

Since, the issue occurs when the screen is moved. Hence, it seems to be a loose connection between the LCD and the motherboard of the system.

I would suggest you to re seat the LCD cable.

You may refer to the link http://bit.ly/12jN7Vb  to check the manual on how to re seat the LCD cable. Select the display option from the content table.

Note: Please follow the safety instructions mentioned on the manual.

Keep me posted with the result. I'll be glad to assist you further.

Thanks Garima, that could well be the reason.  I'm not experienced in fixing computers myself, how could I find a Dell approved repairer please?

KC

Hi Garima,

Mine's actually an N5030, please could you send me a link for the manual?

Thank you,

KC