New batteries won't charge

SOURCE: COmpaq Presario V5000 Battery will not hold charge

Problem with the motherboard connector that charge the battery.

SOURCE: HP Pavilion dv4000 battery won't charge

all you really need to do to find out if it might be broken is to check and see if that DC Jack on the computer is "wiggling" around, if the center part is moving around. If it is, then there is a chance that it is broken. I used to work at a computer store where the owner would resolder new DC power Jacks into laptops, but he was the only one in town who did that. So you might want to check around at the local computer repair or electronics stores to see if someone does that type of thing. Also, have the power supply checked out, it could just be dead.

SOURCE: HP6720s run slow when plugged in??

Start -> Control Panel -> Power Options

Ensure that when plugged-in, it is set to "Maximum Performance".

SOURCE: my compaq presario f500 won't start on battery and

I can tell you, screen issues and wireless issues are one of the problems that goes with a laptop that is GOING TO FAIL. In your case, the F700 is the more expensive F500 which was confirmed by HP to be a failure/defective. But you have the f500 - I actually had this problem, and what I did was I cleaned off the battery contacts with rubbing alcohol on a q-tip and it worked again, but for you, this might be a sign of hte laptop failing.

First the problem manifests as a loss of the wireless connection. Soon, intermittent failures and random reboots and a HOT laptop will turn into a black screen and an inoperable laptop > ie a door stop.

Go to hplies.com and you will see almost 2,000 users with the same issue. The problem lies with the nVIDIA GFX chip on the motherboard. THE ISSUE IS UNREPAIRABLE. Any repairs will force the laptop to fail again.

This issue has actually landed me in small claims court where I am suing for hte full cost of this laptop because not only is hte laptop defective, nVIDIA admitted it, and HP covered it up.

Join us at hplies.com and we will give you the know how to get this issue fixed/your $ back. We even have links to all of the information!

Send me a PM if you want more assistance.

SOURCE: hp pavilion dv8000 help

I had the EXACT same issue on my HP Pavilion DV8000. After reading this thread I started disecting the machine, sure the issue was a faulty internal power plug/cable. It is TRULY a big job, but very doable without special tools. You pretty much have to take every single screw out of the thing to get to that stupid cable.

Here are a few things to know:
1) there are a lot of screws - mainly long black (L 12) and short silver (L 5x2.5). Keep track of all of them in order so you don't end up like me - with 3 leftovers. Lol. There is ONE long black screw that is a little shorted than the others (L 10). This is one I had left over. There are two VERY tiny black ones. I also have one of those left over. There is also a few smaller black ones, too. Just keep them all noted as you remove them and remember where these odd ones go!
2) There are some very flat band cables that plug in to tiny plgs. However thereis no plug on the cable. The flat end just shuves into the plugs. These are very delicate. be gentle with them.
3) When you finally get the housing for the fan loose you can now get to the entire power supply cable. Here is a note: I FIXED my problem by unplugging this cable and plugging it back in. The cable runs under the fan housing, and it seems like you have to remove that housing to get to the cable, but actually it comes out again right next to the processor and heat sink. There is a thin sheet of black sticky insulator tape over the processor and the cable at that point. You'll have to gently remove it. There is not much room there, but you CAN unplug the cable without removing the entire fan housing.

Here is what I did to test this plug and cable. After unplugging it, I shoved a tiny straightened staple (the female plug is very tiny) into the female receptacles for the prongs on the motherboard (red and black only). Then I plugged the power supply in to the power jack. With a DC meter I verified that the female end of the power cable inside the machine was getting juice, and it was.

With nothing left to test, I put it all back together (save three screws) and it is now charging the battery and running from the ad power plug. Whatever I did fixed it!

One last note: There are 4 sequenced screws that hold the heat sink tight. These are under a bit of pressure so the sink is tight. DO NOT remove these as the sink has a heat conducting "goo" that helps it disperse the processor heat. As old as these machines are now, you don't really want to disrupt that "goo" and risk the processor over heating.

I hope all of this typing helps someone.