Inspiron 15R 5520 screen blinks.

Hi Prashant,

I would recommend you to perform  Pre Boot System Assessment (PSA Diagnostics). To launch PSA diagnostics, please press and hold “Fn” key while turning on the system. Hold it down until the diagnostic starts.

You can refer to Dell Article 266787 on www.support.dell.com or click http://dell.to/oe1Qg1

Test the LCD in the System Setup (BIOS). To enter BIOS restart the computer and tap F2 key at the dell logo screen. If the issue persists on BIOS screen, then LCD assembly needs replacement.

Also, tap the back of the LCD to check if it is an issue because of a loose cable.

Please reply for further assistance.

Thanks & Regards
Manshu S
#iworkfordell

Hi,

As you said,i did PSA Diagnostics and i did not get any error or i did not find any problem.

Blinking happens under below mentioned condition:

1) When i select "Power Plan" as "Balanced" and set the Brightness to DEFAULT.

Blinking DOES NOT happens under below mentioned condition:

1) When i plug in/Power on the Adaptor.

2) When i set the brightness to MAXIMUM under "Power Plan"...."Balanced Option"

Regards,

Prashant Prabhu.

I am having the same issue when I come back from a screen saver, when I plug in my flash drive, and when I plug i the AC adapter. Kind of annoying.

I did the tapping no problem found

Hi,

Thank you for the reply.

I would suggest you to perform Dell PC Diagnostics on LCD using the link mentioned below:

http://dell.to/UcY1SE

For reference, you can also click http://dell.to/SvwUY0

Also, update the BIOS and Chipset Driver of the laptop. Please click on the link below which will take you to the drivers website: http://dell.to/YFr4GW 

Enter the Service Tag of the computer and choose the Operating System installed on the computer. Please update the latest version of BIOS available.

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Thanks & Regards
Manshu S
#iworkfordell