After being unplugged and left in a cold car for 9 hours, won't turn on after then plugging into electricity. Has a new battery purchased 6 months ago. Electricity outlet working and checked connection of plug to be sure it's tight but no lights on the computer at all. It has been plugged in overnight but still no lights and won't turn on.Compaq
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Re: Laptop won't turn on.
Did you let the laptop warm up to room temperature for at least an hour before you connected it to the electricity supply?
Since its been in a cold car, condensation can build up inside the laptop which is why sometimes its best to leave it to warm up.
You may have some shorting on the motherboard if it was plugged into the supply as soon as you got it out of the car.
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Computer does not boot up The problem maybe the RAM, it could be faulty or just needs reseating to make proper electrical contact. Reseat the RAM and then boot up your laptop. If it still does not boot up then remove the RAM module/s and take them to your friendly computer repair shop and get them to test the RAM for you. Just like you sometimes need a mechanic to repair your car, sometimes you do need a technician to diagnose and identify the fault or faults on your computer. Not only does a good service technican have the experience to deal with this type of problem, they also have the equipment that allows them to look at things the average computer user can't see, and he has a collection of replacement parts that can be used to quickly test individual components on your computer.
Step 1: Take the battery out, plug in the charger and see if the laptop works. If it works, the battery may be the problem. Check the AC Adapter Check to make sure the adapter is plugged securely into the wall outlet, connected firmly to the adapter box and to the back of your laptop. Most AC adapters have a little light in them on that rectangular box in the middle of the cord that lights up when it's getting electricity. If that light isn't on, try a different outlet. Check your fuse or circuit breaker box and plug a different device into that outlet to make sure there is power to it. If it still does not light up, your adapter could need replacing. Also check the adapter box for signs of warmth, as it will generate heat when it's plugged in. No heat means no power.
Remove the Battery Sometimes it's as simple as a seated battery. Remove the battery entirely and clean out any dust, lint or hair that may be clogging the connectors and preventing a proper connection. Reseat the battery securely and make sure the little locking pins that hold your battery in place are securely fastened and there is no movement. Unplug your laptop while it is running. If it still works, the battery has been charging. If it shuts off, or doesn't hold a charge very long, you have a bad battery. Unplug your laptop while it is off, then try to turn it on. If the battery is bad, your laptop probably won't turn on at all. Turn off your laptop's screen-saver when testing its battery. The screen-saver will conserve the battery and not give a clear time frame for how long your battery can really last. Click the battery icon on your laptop when it is unplugged. It can tell you how much battery life you have available. This icon is usually located in the bottom right corner of your screen and will provide the percentage of battery power you have left. Keep track of the time it takes to go from 100% charged to 1% charged. If this takes less than an hour, your battery is probably beginning to fail. You can also try this every week or two to see if your battery holds a charge for shorter periods. Factor in the amount of time you have used your laptop. Most laptop batteries last 2 to 3 years or about 500 charges. Wait a few days before determining whether a new laptop battery is faulty. New batteries sometimes take a few charges to build up to their maximum run time.
If light you are talking about is on the power supply itself, you need to replace the power supply. Look on E-Bay.
If the light you are talking about is the AC power light on the laptop, then there are two things that are most likely. First is the power receptacle in the laptop. I have personally seen many of these fail. The other thing is the battery. With the system Off, and power supply disconnected, remove the battery. Wait a couple of minutes and put back in and plug in charger. If it continues to happen then it is most likely the power receptacle in the laptop.
Looks like your battery is having a problem. Remove the battery and replace after a couple of hours. If problem remains replace the battery with another to test, if this works, then the problem is with the adapter unit. Get a new one.
shut down computer - unplug power cord from laptop - remove the battery from laptop - plug Ac adapter into computer and Ac outlet (wall)
turn on computer
if computer does not turn on, replace the AC adapter and cord - then place battery back into computer
plug in new Ac adapter and cord - recharge battery - if orange light stays on after 4-6 hours of charging battery, you need new battery as well - replace battery, charge it up and it should be fine
if you have attempted these steps before and no change occurs, then you may have issue with power connection in computer - locate a service centre to replace power connection on computer
Place the battery back in and the power cord. Follow the power cord all the way to the plug and verify nothing was unplugged by accident. (the box on the plug sometimes disconnects without the user knowing it) This could have caused your lack of power. Hope this helps.