PC won't recognize Lumix DMC-LZ2

my camera works but it has a black screen fore a pick but show the menu and stuff

Please downloaded it here : www2.panasonic.com/consumer-electronics/support
www.opendrivers.com/.../panasonic-free-driver-download.html
www.panasonic.com/business/provideo/.../software-downloads.asp

The connecting cord you got with the camera has a small USB plug that goes into your camera and a normal size USB that you plug into a USB port on your computer.

According to the published specs for the DMC-LZ2, no. The DMC-LZ2 works with SD and MMC cards, not SDHC cards.

The DMC-LZ2 is specified to work with SD cards, not SDHC cards. While SDHC cards are physically compatible with SD cards, they will not work in SD devices. SD cards will work in SDHC devices, but that doesn't help you any here.

It's a hardware incompatibility. No firmware update can get around it.

Start using a card reader instead of your camera.

try to plug it back in with out the battery see if that works if not turn off pc then plug it back in

Does the PC pop up with anything when the camera is plugged in? if so, make sure the camera is in plyback mode and check windows explorer, under My computer, there should be a extra drive letter pop up.
If not then the USB socket can become damaged easily (have a look). If the socket is damaged, then you can either get it repaired or buy a SD card reader. that stays connected to the PC through it's own USB cable, you take the SD card out of the camera and plug it in to the reader (this is a better and cheaper option)
Cheers.

switch off your digi cam !!!! connect the digi cam via dta cable to the PC !!! now switch on the cam !!! keep your digi cam in display picture mode !!! now u can use your digi cam like a pen drive

There is a guy in South Carolina that has good used parts for your LZ2. I think his email is [email protected]