I have a hp pavilion zv5000 laptop with a Pentium 4 CPU, Windows XP bought in 2004.
Cause.... The AC mains power cable would not plug into the laptop properly as over the years, it became loose at the connector. Laptop would not charge.
Remedy... I took off the cover and took out the CPU (for the life of me, I don't know why now! - I reinserted it screwing the springed screws in tight.... are they supposed to be tight?). I gently prised the prongs out a little where the power cable slots in. When re-assembled, the prising bit worked as the power attaches firmly and the light shows battery is charging.
Result... Then I tried to boot up....... The HD light flashes and the DVD/CD combo light flashes next but that is as far as it gets. Screen is blacked out. Even tried to attach an external monitor and used the function keys to switch over but that comes up with "No signal detected" and just goes black.
I have now taken it apart and even with the RAM out, there are no error beeps.
Battery is fine Strawballs. Like I said, the problem was the mains connection at the back. Even now, the mains light is lit when plugged in and when I use the battery, the lights on the laptop keyboard stay lit.
Check out this link for possible battery recall. Mine is fine..... click here
I think my MOBO is dead.
The CPU has srings on the screws that hold it onto the MOBO, are they supposed to be tight or a little loose?