G
Guest
I'm using Windows XP. I have had an HP6940 Deskjet for a year with no
problems. Last week, a message popped up that there was a printing error,
and my document did not print. Cleared the print queue, tried to print
again, no luck. Restarted the computer. Still no printing. Uninstalled and
reinstalled the printer. No good. Contacted HP online numerous times. When
the printer is plugged in, the Device Manager says "Unknown Device". HP
keeps telling me to uninstall the USB Root Hub that says unknown device, and
restart the computer and my problem will be solved. This is not working. HP
sent me a new printer, same problems.
When I use the installation disk, everything is fine until it says to plug
the printer in via USB. The computer does not seem to recognize the
connection. I have tried waiting several minutes at this point to see if it
kicks in. The next screen says I can proceed and connect the printer later.
When I do that, it says it is installed, but the printer is not listed in my
printers. The Device Manager will say unknown device. If I try to plug the
printer in without installing, there is no popup to let me know that I
plugged something in.
I have installed my boss' HP6540 printer with no problems. Works great.
When I plug it in via USB without installing, the balloon pops up to let me
know that it is plugged in. I have tried using his USB cable with my
printer, and with the new printer HP sent. No luck, of course. I have also
plugged his USB mouse in and my computer recognizes it right away and it is
immediately functional.
I have a Sony Micro Vault thumb drive that I have used in the past with this
computer. Now the computer does not recognize it. Have a brand new Cruzer
Micro thumb drive that has never been used, and it won't recognize that
either.
I have 2 USB ports. I have tried both of them with the printers, with the
same results. I don't know a whole lot about USB. In the Device Manager, it
lists 3 instances of "SIS 7001 PCI to USB Controller", then "SIS PCI to USB
Enhanced Host Controller", then 4 instances of "USB Root Hub". If I
uninstall all 4 USB Root Hubs (was scared to uninstall the rest), then
restart the computer, it will recognize my thumb drive if I try to plug it
in. The balloon pops up to say it found new hardware, then another pops up
to say unknown device. I then cannot access it and the Device Manager says
unknown device.
Any comments or advice would be greatly appreciated!
problems. Last week, a message popped up that there was a printing error,
and my document did not print. Cleared the print queue, tried to print
again, no luck. Restarted the computer. Still no printing. Uninstalled and
reinstalled the printer. No good. Contacted HP online numerous times. When
the printer is plugged in, the Device Manager says "Unknown Device". HP
keeps telling me to uninstall the USB Root Hub that says unknown device, and
restart the computer and my problem will be solved. This is not working. HP
sent me a new printer, same problems.
When I use the installation disk, everything is fine until it says to plug
the printer in via USB. The computer does not seem to recognize the
connection. I have tried waiting several minutes at this point to see if it
kicks in. The next screen says I can proceed and connect the printer later.
When I do that, it says it is installed, but the printer is not listed in my
printers. The Device Manager will say unknown device. If I try to plug the
printer in without installing, there is no popup to let me know that I
plugged something in.
I have installed my boss' HP6540 printer with no problems. Works great.
When I plug it in via USB without installing, the balloon pops up to let me
know that it is plugged in. I have tried using his USB cable with my
printer, and with the new printer HP sent. No luck, of course. I have also
plugged his USB mouse in and my computer recognizes it right away and it is
immediately functional.
I have a Sony Micro Vault thumb drive that I have used in the past with this
computer. Now the computer does not recognize it. Have a brand new Cruzer
Micro thumb drive that has never been used, and it won't recognize that
either.
I have 2 USB ports. I have tried both of them with the printers, with the
same results. I don't know a whole lot about USB. In the Device Manager, it
lists 3 instances of "SIS 7001 PCI to USB Controller", then "SIS PCI to USB
Enhanced Host Controller", then 4 instances of "USB Root Hub". If I
uninstall all 4 USB Root Hubs (was scared to uninstall the rest), then
restart the computer, it will recognize my thumb drive if I try to plug it
in. The balloon pops up to say it found new hardware, then another pops up
to say unknown device. I then cannot access it and the Device Manager says
unknown device.
Any comments or advice would be greatly appreciated!