Why is the bottom half of my screen blank?

I have the same problem..It was fine when I went bed and only half screen next morning I have tried reboot a few times to no joy. Any other ideas please

Some Kindles can be affected by high amounts of electromagnetic energy, such as airport security. If you've been anywhere near these kind of things then you're going to need a new kindle. Otherwise the hard reset (holding down the power on slider for 20 seconds) should be of help in fixing it. Try it a few times as some people have found that it can take a few goes.

"Try the hard reset, but that probably wont work. You probably need a new screen. You may have a short in the cable for your screen, or some of the backlight bulbs could have burned out. Also, If it's damaged from water, a new screen likely wont help.

I don't know which Kindle you have for sure, so double check for compatibility, but here's a replacement screen on eBay for about $50: http://www.ebay.com/itm/Replacement-LCD-...

You can find a repair guide video by clicking on the Kindle picture. I'm sure they have more screen replacement guides on the internet as well."

I don't know how to fix this I have lost the complete screen a couple of times and have managed to restore it but the half screen is a problem can't fix it .