Hi, i am really desperate, i left my laptop at home switched off for 3 weeks and when i tried to switch it on again it was not responsive although it looked like the power supply is ok. what should i do?
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Re: hp pavilion not turning on
Try to remove the battery and plug the system in with no battery and try to turn it on if this does not work put the battery back in and ...to turn on hold the on button in for 5sec and should turn on if not could be a problem with a power surge when you was gone and the M/B got messed up
if the power supply is ok that is make sure when pluged in the light comes on so you know you have power
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The lid actuator switch may not be working correctly. It's a small switch above the keyboard and led's on either the right or left side. Try pressing it 2 or 3 times to see if the display starts working correctly again. If so, it will need to be replaced.
If that doesn't work, you can also turn it on with the ac adapter plugged in. After it boots, press the power button and hold it in until it shuts off and then turn it on again and see if the display has returned to normal.
If neither of these options work, your laptop may need to have the backlight replaced.
The only suggestion I can think of trying is to remove the battery and mains lead from the unit wait 5 mins then plug the mains in without the battery present. If the unit does not start after this then it's likely an issue with either the plug pack or the notebook motherboard. Try wobbling the connector going to the laptop and see if its a loose connector. Get the plug pack tested with a voltmeter to see that it's working.
Has the new plug pack got a removable end piece or is it hard soldered, if it's got a removable end piece has anyone accidently reversed this causing + to go to - or vice versa?
If the above tests don't prove positive then I'd say the unit will have to go in for service.
Hope this helps