The backlight is probably has blown in the screen, unfortunately it is an integral part and cannot be changed separately, you will have to order a replacement screen, these are not expensive and you may be able to get one cheap online
Replace the backlight...
Just restart your laptop!
No, you need to purchase a new one
it depends on what OS you are using but if you are using Windows just right click the main desktop screen and scroll down to screen resolution for windows 7 and for xp go to control panel and it will be under display options.
Take the battery out and let it cool down
Laptop screens can be cheap to fix or they could be expensive to fix, it all depends on what type of laptop it is that you have. If you have a higher resolution and more glossy screen is it going to be slightly higher to repair. Take it to a computer technician to get a good estimate before doing anything with it!
Your screen resolution must have changed.
You can always get the screen to your laptop fixed at "BestBuy", their geek squad works with them for a reasonable price however the time period that they keep your laptop varies. Also you can send it back to the company from where you purchased it from, they can fix it for a fee also.
take it to a shop and tell them to fix it there normally the shop you buy it from that is the shop you should go to hope this helps
From my experience, you may have one of two problems: -The backlight for the LCD has failed -The inverter board has gone bad At the bottom of the screen is a bulb and it is gradually dying just like a florescent light bulb You can replace the screen, but it can be a bit tricky. Prices run from 80-150 USD.
I got a new blackberry and sim card
In most cases, it is not repairable. A good cost-effective solution is to replace the screen yourself. Most people are scared to fix their laptop screen. But replacing LCD screen is easy. It is only slightly more difficult than changing a light-bulb - removing 6 screws, pulling off a bezel, disconnecting the old screen - it is easy even if you are not a technical person - look at some on-line guide.