Freezing Your Laptop Screen
As the name implies, your laptop’s display screen has liquid – it’s a liquid-crystal display, or LCD, to be exact. And yes, the LCD screen can freeze if it gets too cold. When you purchase your laptop (or LCD television) there will be a user guide that gives you the specific temperatures at which the display will work, literally freeze up, or even melt down. If the liquid crystals in the screen get to around thirty below zero, they may be permanently damaged. Nine times out of ten the clear plastic display screen will crack, and when you attempt to boot up the device, you just get a white screen and nothing else. Since LCDs are in almost everything these days – cameras (the display on the back), mobile phones, mobile game systems, and all computer monitors (pure cathode ray display screens are no longer produced), you should be familiar with how cold can kill your LCD.
Don’t Leave It In Your Car
If you freeze your laptop, usually by forgetting it in your car overnight, the best thing to do is try to let it warm up inside before you boot up. If the display is going to recover, shocking it with heat will not help. Do not, as some have done, attempt to warm up your frozen laptop in a microwave oven. Don’t put it in a regular oven. Don’t use a hairdryer on it. Let it warm up to room temperature gradually. Once it’s at room temperature, boot it up. If you only see a white light, that’s bad. LCDs don’t illuminate themselves, since the liquid crystals aren’t luminescent. There’s a white cold cathode tube behind the screen that projects light through the display. So if you see only white light coming from the display, the crystals are not energizing because they got too cold, and cracked their containment case.