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Laptop wont turn on -- faint buzz and lights flash only

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#1 KrayzieFox


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Posted 03 December 2009 - 09:41 PM

Hello all, I'm new here and in need of a little bit of help!

My HP zd7005qv laptop stopped turning on a little while back, and at first I thought it was a fried HDD. However, I also noticed that when I plug in the power cord, the lights would blink only for a brief moment then immediately go off. So I started fiddling with the cord and I got it in a position where the lights would complete their start-up blink, and when I tried to turn it on it actually started booting. But it stopped as soon as I moved the power cord again.

So I figured that the problem was a bad power jack.. it's pretty common from what I hear. I disassembled it, desoldered the power pin, and soldered a new one I bought off eBay. Now there is absolutely no problem with the power jack as the battery will finally charge, but the laptop still wont turn on. I'm afraid I may have screwed something else up while disassembling and reassembling the laptop.

When I press the power button, the lights at the top come on, I hear a light whining buzz and then all the lights shut off. I tried removing the RAM sticks, I even removed the HDD and the same thing happens no matter what. I also tried turning it on with just the AC adapter, and I even let the battery charge a bit to try tuning it on with just the battery.

I did need to remove the heat sink in order to gain access to the power jack, and it was kind tough to put back in. Is there a special trick to reinstalling those?

What do you guys think? Burnt processor maybe?

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#2 rmpbklyn


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Posted 14 December 2009 - 04:29 PM

test that it's not the power cord, if there is someone with the same model that you know to test , if it's a wire try amazon
I had purchased a new wire for my laptop and all was good

#3 ReviverSoft


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Posted 14 December 2009 - 04:50 PM


Connect your system using an alternate AC power cord. If it fails to start, one of your hardware components might have been affected.
ReviverSoft - Happy to help!

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