Solved The top portion of screen is also displayed at bottom

August 23, 2013 at 16:41:31
Specs: Windows 7
The top two inches portion of the screen is also displayed at the bottom of the screen as a 50% transparent super impose. The laptop is Ideapad z570.
The problem does not exist in the VGA connected external monitor. Is there an easy fix to this.
Thanks


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✔ Best Answer
August 27, 2013 at 13:04:54
Resolution depends on your laptop screen size but 60Hz is typical for LCD's. This might help if you have no other information:
http://windows.microsoft.com/en-gb/...

EDIT: Seems your laptop is 1366x768.

Out of curiosity is it any different if you run the laptop without the external monitor plugged in?

The symptom is a bit unusual. My best guess is a hardware fault, such as the screen itself (inc inverter), or the connection between the laptop and the screen. Sometimes the cable gets damaged where it hinges back and forwards (check that nothing changes as you tilt the screen back and forth). One of the end connectors becoming loose is also possible.

I've rather precluded driver (software) issues because the external monitor is fine.

Always pop back and let us know the outcome - thanks

message edited by Derek



#1
August 23, 2013 at 19:57:48
When the following situations, you need to replace the LCD inverter:
No image on the screen, but the power light stays on
Dark display but still readable
Between the screen flashes on and off 1/2 to several seconds
Power light stays on, but no display and sound
No image on the screen, but LCD TV still has sound
Picture cycle on and off, as well as high-power LED lights

edited by moderator: removed advertising


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#2
August 24, 2013 at 15:55:45
Sounds like it's over-scanning. Are the resolution and refresh rate set to match the laptop screen?

Always pop back and let us know the outcome - thanks


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#3
August 27, 2013 at 10:34:24
so that means the LCD inverter is good. Is it the bad cable from screen to Motherboard ?

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#4
August 27, 2013 at 10:39:13
The screen resolution is 1366 X 768. The refresh rate is 60Hz. I donot know if they are matched.

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#5
August 27, 2013 at 13:04:54
✔ Best Answer
Resolution depends on your laptop screen size but 60Hz is typical for LCD's. This might help if you have no other information:
http://windows.microsoft.com/en-gb/...

EDIT: Seems your laptop is 1366x768.

Out of curiosity is it any different if you run the laptop without the external monitor plugged in?

The symptom is a bit unusual. My best guess is a hardware fault, such as the screen itself (inc inverter), or the connection between the laptop and the screen. Sometimes the cable gets damaged where it hinges back and forwards (check that nothing changes as you tilt the screen back and forth). One of the end connectors becoming loose is also possible.

I've rather precluded driver (software) issues because the external monitor is fine.

Always pop back and let us know the outcome - thanks

message edited by Derek


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