Excellent thread everyone. My zv5000, which is 2.5 years old, decided to die last weekend. My symptoms are similar to the ones others have described: I press the power button and the LED’s light up, the fans kick on, and the hard drive spins for maybe a second. After that nothing happens but one of the fans continues to run and the LEDs are on, the LCD on the laptop itself also seems to have power as it will react to pressing the “lid closed” switch. I did try hooking up an external monitor to confirm that it was not related to LCD on the laptop itself but I knew this would not be the case because the hard drive was obviously not cranking away loading windows, etc.
I have tried most of the things everyone here has mentioned:
1) Removed the heatsink (blew out the dust while it was out), removed and reseated the CPU (mine is an Athlon so I have a lever rather than screw for locking it in), and applied some thermal paste before replacing the heat sink.
2) I have 512mb of Samsung RAM installed from HP, and another 512 of Viking RAM in the additional slot. I tried every combination of these chips (just the Samsung in the main slot, just the Viking in the main slot, no RAM at all, just the Samsung in the additional slot, just the Viking in the additional slot, and finally the Viking in the main slot and the Samson in the additional slot).
3) I removed the harddrive, DVD, and internal wireless NIC (but not all out at the same time)
4) Tried running with just the battery
5) Tried running with no battery and just the AC
None of this seemed to make any difference, with the exception of the RAM. At one time in one of the combinations the screen would flash and then have a series of white dots in a rectangular pattern. However, after moving the RAM around again I could not recreate this.
Does anyone have any additional suggestions regarding what I should try? A lot of people seem to have problems with the dc jack and/or power brick but this does not seem to be the case with mine since the lights are coming on consistently. Also, this laptop has spent 99% of its life sitting on the desk in our office and the power was rarely disconnected (which I assume contributes to the failure of the dc jack).