Will cold weather break my laptop?
Top 10 Cold Weather Tips for Laptops
Regular laptops have been designed to work within a safe temperature range - normally 50 to 95 degrees F (10 - 35 degrees C). This range refers both to optimal usage temperature of the outside environment and the temperature the laptop should be warmed to before using. Protecting your laptop from cold weather is important and you should know how to protect your laptop from cold weather. Protect yourself and your laptop from the damage cold weather can cause.
Ruggedized Laptops If your budget allows, purchase or lease a ruggedized laptop if you will be outside in cold temperatures for extended periods of time. Ruggedized laptops have been designed to work under extreme weather conditions. When you rely on your laptop and can't count on the weather to co-operate - a ruggedized laptop is worth considering. Most ruggedized laptops have been tested according to MIL-STD-810F standards.
Careful Storage Never leave a laptop, even in a well-padded and insulated laptop case in the trunk of vehicle in cold weather. The laptop could freeze and you lose all data contained in it.
Let It Warm Up Once you bring a laptop in from the cold - allow it to warm up to room temperature before booting. The same is true when you go outdoors - allow the laptop to acclimatize to the outside temperature before booting up.
Incorrect Warming Methods Do not use devices such as mug warmers or pocket warmers to heat or keep a laptop warm. They are not designed for this purpose and can create problems as they will not heat or keep a laptop warm in the right way. They could heat the wrong parts of a laptop or cause it to generate too much heat and melt internal components.
Laptop Warmers There are laptop warmers designed specifically for the purpose of keeping a laptop warm and these are what you should use. Laptop warmers have been tested to ensure they will safely protect your laptop and are a wise investment.
Excessive Heat Build-Up Do not use your laptop while it is still inside a laptop bag. There is no room for air to circulate and you will get heat build-up. You can create your own "box" for your laptop which will allow air to circulate and provide an enclosed area for you to use your laptop. Having the laptop on a raised platform for your laptop within the box will aid in airflow. This laptop box will help keep the laptop warmer as cold air is blocked and the heat generated from the laptop is kept in the box.
Protecting Your Display Don't use heating pads or other external sources of heat to warm up or thaw a laptop display. Allow the display to warm on its own and do not boot up a laptop if you suspect the display is frozen.
Stay Out of the Cold Whenever possible stay out of direct exposure to cold weather conditions by staying in a vehicle, inside a building or other type of shelter. Protecting your laptop from excessive dampness or wet from snow will keep your keyboard from freezing and other problems from developing.
Change Power Settings By changing the power settings from power save mode will help keep the laptop warm as it continues to run. Instead of having the hard drive shut down, keep it spinning. The longer the laptop can be kept left running, the warmer it will stay as it generates its own heat.
Don't Get Creative Last but by no means least - do not create your own devices to keep your laptop warm! This is especially important if you are using a company owned or leased laptop. You will be responsible for any damage caused and will have to have it repaired or replaced at your own expense.
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When you go from cold to warm the longer you can wait for the unit to acclimatize from cold to warm temps the better. Usually the thing I am most worried about is condensation that it picks up being outside or even in the car on a long winter trip.
That I try to remove with a chamois cloth prior to start up (probably a superstition, but it's habit now). I work in a lot of remote places in Canada with temperatures going from 0 to -50 °C.
I live in Montana, and we recently had a couple of really cold weather snaps (-22 °F, -30 °C), and I walk around with my laptop in my bag all the time. It should be okay, but especially when it's cold be sure not to bang it around until it warms up a bit, because the plastic components become much more rigid and fragile in cold temperatures.