Uninstall and disconnect both, go into Device Manager and uninstall the USB
Controllers. Reboot the PC.
Vista should re-find and reinstall the USB drivers.
Add the LaserJet first. Get that one printing, then see if you can install
the 5850. Technically you can't 'clog up' a USB port, provided it has
enough power. It can fail... and so can the cable.
--
Cari (MS-MVP) Printing & Imaging
www.coribright.com/windows
<> wrote in message
news:d7eb36d8-a7b1-424d-9aaf-...
>I have added hp printer deskjet 5850 to vista hame as a 5600 (as told
> on hp website)
> It printed. then I added a laserjet 2100 via a parallel to usb.
> This works fine but the 5850 has stopped working. I tried plugging
> into a different usb port which has just clogged up the port but not
> got the printer working. help!