well if you a desktop monator you can hock that up to your laptop an if that does not work leave it alone for a week keep off for at lest a week that sometimes help
Just restart your laptop!
Take the battery out and let it cool down
If the line is constant then it is probably a hardware problem that requires repair. If the line changes or goes away when you change the screen resolution for the desktop then you can probably fix the problem through software.
Replace the backlight...
No, you need to purchase a new one
Your screen goes dim because all the energy from the battery in the charger goes into you're laptop so when you unplug it. It goes dim but there is ways you can fix it that how my laptop works.
Either via remote desktop connection or by attaching a external monitor. If your laptop screen does not show anything - not even a manufacturers/Microsoft logo during start, it is likely your screen is broken. If your laptop-screen shows a very faint picture, it is likely the back light of your laptop screen is broken / disconnected. If however, everything is normal, up to when you would normally see your lo gin screen, but then your screen goes black, it is likely to be a setting on your computer, which you yourself can fix. Please refer to the related link black screen. If you get a new laptop and bring your old laptop to the store you can get the info transferred from the old one to the new one you can also do this with cell phones. Ken Eddy
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!
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
U do it
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.