Hi, I am A. Stevens here to help with your question!
It seems that either the cable between the laptop board or the LCD itself is defective.
If you can let me know what make/model your laptop is.
I can send you the parts that you would need to repair it.
Please let me know when you return, so that we can continue working on this question. I will respond as soon as possible when I see your reply.
Make of computer is
-.Make is Acer Model Aspire
Make Acer Model aspire
Make Acer Model Aspire 7520 series.
You can purchase the LCD screen here: http://www.laptopscreen.com/English/model/Acer/ASPIRE~7520-5926/
Here is the cable: http://www.ebay.com/itm/like/200785292122?lpid=82&chn=ps
Ok thanks for help and info.