Thank you for your response. I appreciate your technical expertise. As you mentioned that the external monitor works fine irrespective of the display on the laptop screen, it indicates that it might be an issue with the LCD cable or LCD. I would advise you to first replace the LCD cable and check, if the issue persists; replace the LCD.
Since the external monitor is able to display video, it seems to be an issue with the LCD assembly or the cable connecting the LCD to the motherboard. You can try running the built in diagnostics for LCD to check if the issue is with the LCD or the motherboard.
Here are the steps: Note: Please disconnect the external monitor before performing this step.
Power off the computer
Press and hold ‘D’ key on the keyboard and then press power button once to initiate the test
If the LCD is fine, then you will see different colors flashing on the screen
I am adding you as a friend; please accept my friend request and send me a personal message with the system Service Tag and the name as it appears on the account so that I can check the system warranty details.
Thank you Mr.Appu S, I followed you suggestion. It did show all the colors perfectly.
I'll open the laptop and see for all the cables connectivity.
Since I run the complete PSA, and there wasn't any error, so Motherboard must be fine??? Is there any possibility that It could be the Motherboard that is faulty.
Thank you for your response. Since you are getting display on the external monitor, the motherboard should be fine. You can try to reseat the LCD cable. Here are the steps:
Note: Please ensure that all peripherals are disconnected; battery is removed and AC Adaptor is unplugged from the computer.
Turn the system over, remove the screw securing the hinge cover
With fingertips or a plastic tool, pull up the hinge cover at the upper right corner
Pry up the remaining edges of the hinge cover
Remove the hinge cover
Use the pull-tab to disconnect the display cable (below picture shows that the keyboard is removed. however the cable can be accessed without removing the keyboard)
I reset the cable and the complete LCD screen, Then It did show the display and I ran PSA, no error was found, showed color flashes. But Then after that, sometimes it is showing the display, sometimes not. Could it be the LCD cable, or LCD or could it be the port through which LCD cable is connected to the motherboard.
AS I mentioned before, after resetting the LCD cables, No-display-still-booting problem occurred thrice, but now I have shut it down and open it for many times and there is no problem. I don't think problem could have just vanished.
Now I cannot check it by changing cables /LCD since it is working, do you think It may reappear??
Thank you for your response. Glad to know that the system is working now. It appears that it might be an issue with the LCD cable. I would recommend you to continue using the computer and keep it under observation. If the issue persists, then replace the LCD cable.
DELL-Appu S
4 Operator
•
3.1K Posts
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October 3rd, 2012 04:00
Hi Ankita,
Thank you for your response. I appreciate your technical expertise. As you mentioned that the external monitor works fine irrespective of the display on the laptop screen, it indicates that it might be an issue with the LCD cable or LCD. I would advise you to first replace the LCD cable and check, if the issue persists; replace the LCD.
Please reply if you have any questions.
DELL-Appu S
4 Operator
•
3.1K Posts
0
October 1st, 2012 06:00
Hi Ankita,
Since the external monitor is able to display video, it seems to be an issue with the LCD assembly or the cable connecting the LCD to the motherboard. You can try running the built in diagnostics for LCD to check if the issue is with the LCD or the motherboard.
Here are the steps:
Note: Please disconnect the external monitor before performing this step.
I am adding you as a friend; please accept my friend request and send me a personal message with the system Service Tag and the name as it appears on the account so that I can check the system warranty details.
Please reply if you have any questions.
ankita0112
8 Posts
0
October 1st, 2012 11:00
Thank you Mr.Appu S, I followed you suggestion. It did show all the colors perfectly.
I'll open the laptop and see for all the cables connectivity.
Since I run the complete PSA, and there wasn't any error, so Motherboard must be fine??? Is there any possibility that It could be the Motherboard that is faulty.
thank you again.
DELL-Appu S
4 Operator
•
3.1K Posts
0
October 1st, 2012 12:00
Hi Ankita,
Thank you for your response. Since you are getting display on the external monitor, the motherboard should be fine. You can try to reseat the LCD cable. Here are the steps:
Note: Please ensure that all peripherals are disconnected; battery is removed and AC Adaptor is unplugged from the computer.
Please reply if you have any questions.
ankita0112
8 Posts
0
October 2nd, 2012 03:00
I reset the cable and the complete LCD screen, Then It did show the display and I ran PSA, no error was found, showed color flashes. But Then after that, sometimes it is showing the display, sometimes not. Could it be the LCD cable, or LCD or could it be the port through which LCD cable is connected to the motherboard.
ankita0112
8 Posts
0
October 3rd, 2012 21:00
Thank you Appu S, I'll do that and let you know.
ankita0112
8 Posts
0
October 5th, 2012 18:00
AS I mentioned before, after resetting the LCD cables, No-display-still-booting problem occurred thrice, but now I have shut it down and open it for many times and there is no problem. I don't think problem could have just vanished.
Now I cannot check it by changing cables /LCD since it is working, do you think It may reappear??
any suggestions, what should I do??
DELL-Appu S
4 Operator
•
3.1K Posts
0
October 7th, 2012 05:00
Hi Ankita,
Thank you for your response. Glad to know that the system is working now. It appears that it might be an issue with the LCD cable. I would recommend you to continue using the computer and keep it under observation. If the issue persists, then replace the LCD cable.
Glad to assist.