HeHe.... My grandpa called me because he was having this problem. After searching the internet, I asked him to check the power cord - sure enough the two pieces of the cord had come separated. The computer wasn't plugged in!
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HP dv series laptops are notorious for motherboard problems. I'm sorry to say your's sounds like what I've seen to often. Contact HP as they have extended the warranty periods on a lot of the models and your's may still be in affect.
I have the same model with the same symptoms in for repair. This is a motherboard issue and requires a reflow of the GPU and chipset. It has nothing to do with the LCD because the buttons don't react when the laptop is "turned on". The touchpad turn on/off button does not react when pressed, the same is with the wifi, volume and mute buttons. The problem is in a poor solder and a cracked/oxidized contacts due to heat buildup.
As others have said, the most common fault with the ZV series is the power socket. However, you mentioned the Lightning Bolt. This indicates that the battery is being charged and it should go out as soon as the battery is fully charged.
If the Lightning Bolt flashes on and off regularly, especially when the power cable is moved, then the socket is at fault and needs replacing.
You can check to see if the battery is receiving a charge by doing the following
1. Right Click the Desktop
2. Click Properties
3. Click the Screen Saver tab
4. Click the Power button
5. Click the Power Meter tab
This will tell you the computer's current power source and whether the battery is charging.
I have replaced several of these sockets on ZV5000s and I'm sure the 6000 will be similar. I would not recommend this job for anyone without technical knowledge, despite some of the websites that say you can do it yourself. You will need to strip the entire laptop down and all but remove the motherboard before the socket can be replaced.
if you are only looking to get the files off the hard drive simply remove it and daisy chain it to a desktop. On the bottom side of the laptop there are two screws marked by a symbol that looks like three cd stacked up on top of each other. Remove the screws and cover, the hard drive in on the underside of the cover.
For all those with the ZV series power jack problem, I have replaced a few of these jacks and it is not an easy job unless you are an engineer.
The entire laptop needs to be disassembled, all the panels need to be removed, including the keyboard and you almost have to remove the motheboard.
Even when you eventually gain access to the offending part, you will need to be competent in using a soldering iron to remove the jack without damaging the printed board, then clear the holes so the new jack can be fitted.
While you are doing all this, you need to remember that the circuitry is static sensitive. This means that you can kill your motherboard just by touching it.
When you have finally finished the job, unless you have been pretty smart, you'll end up with a box full of different size screws and you won't know what goes where!
With the ZVs I have repaired, I usually supply a short jumper lead that plugs into the power jack on the back of the laptop. This is two or three inches long with a cable power socket on one end and a power plug on the other. This means that the user can leave the power plug plugged into the laptop all the time and just disconnect and reconnect the power unit from the other end of the patch lead instead of wearing out the laptop's power jack.