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Compaq presario CQ40 starting problems

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Please help my laptop compaq presario CQ40 blank screen & scroll/caps lock blinking and can not start please help thanks to you
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Answer 1 / 3
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Try this

1. Remove the battery and cable.

2. Press and hold the power button for 58 seconds.

3. Replug and start.

Good luck
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Thank you for answering me but problem is not solved?
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I suggest you boot in safe mode and start choosing last know good configuration.
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