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Why does my laptop shut down uprompted?

My PC laptop sometimes just stops (black screen the lot) as if power was out. Is this a battery problem?

Your advice would be appreciated

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Would you let us know what laptop and operating system you are using so we may better assist you? Ralph

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It's a compaq cq45 windows 8

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A couple things to try.

Take the battery off and use the laptop from wall power. If you don't experience the problem, bad battery.

Another thing to check. Right after it goes black screen, put your hand on the keyboard and a couple other places. Does it feel hot? Also listen for your fan, can you hear it running? is it loud?

There is always a chance that the system is cutting power to protect itself from overheating.

If the laptop feels hot and you hear the fan running loud or not running at all. that could be the problem.

If it feels hot and the fan is running, get a can of air and try to make sure there is no debris blocking the air flow.

If it feels hot and you can't hear the fan running, you might need to open the case and check to make sure the fan is plugged in. If it is plugged in you might need to replace it (test it before you replace it).

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