Hi, I have a 3 year old Dell Demension 8250 PC with Windows XP SP2. My
PS2 keyboard port failed, so I replaced the Dell PS2 keyboard by a
Microsoft Digital Media Pro USB keyboard. Initially this worked fine,
but after a few days the keyboard started to lock after a couple of
hours of use. It came back to life after disconnecting/reconnecting
the USB plug. Sometimes this trick doesn't work, but reconnecting to
another USB port does. When that doesn't work, powering down the
system works. Sometimes I have to try each of these tricks 10 times
before it works again. I replaced the Intellitext 5.2 driver by the
latest 5.4 version, but that is no improvement to the problem.
Any suggestion ? Thanks in advance !

"paul" <kaartenlezer@yahoo.com> wrote in message
news:1134937049.670898.192410@f14g2000cwb.googlegr oups.com...
> Hi, I have a 3 year old Dell Demension 8250 PC with Windows XP SP2. My
> PS2 keyboard port failed, so I replaced the Dell PS2 keyboard by a
> Microsoft Digital Media Pro USB keyboard. Initially this worked fine,
> but after a few days the keyboard started to lock after a couple of
> hours of use. It came back to life after disconnecting/reconnecting
> the USB plug. Sometimes this trick doesn't work, but reconnecting to
> another USB port does. When that doesn't work, powering down the
> system works. Sometimes I have to try each of these tricks 10 times
> before it works again. I replaced the Intellitext 5.2 driver by the
> latest 5.4 version, but that is no improvement to the problem.
> Any suggestion ? Thanks in advance !
>

Hi
First i would try the keyboard on another machine
if that works ok then i think the motherboard is failing

chas

The keyboard works fine when I plug it in on my son's laptop, but so it
does when I plug it in on my desktop. It's only after some hours of
usage that it locks up, I havn't got the chance to get hold of another
PC so long. I still hope that it is some kind of software conflict
that pops up incidentally, but you're probably right that it is a
hardware problem. Would that be a replaceable device on my motherboard
? I have 8 USB 2.0 connectors of which 6 are in use and continue to
work fine (printer, PDA, camera, scanner, and GPS) when the keyboard
locks up, so I assume the USB interface is OK. But when the keyboard
doesn't work, Windows says that the (keyboard) USB device is not
recognised...
paul

"paul" <kaartenlezer@yahoo.com> wrote in message
news:1134992379.543899.271100@g49g2000cwa.googlegr oups.com...
> The keyboard works fine when I plug it in on my son's laptop, but so it
> does when I plug it in on my desktop. It's only after some hours of
> usage that it locks up, I havn't got the chance to get hold of another
> PC so long. I still hope that it is some kind of software conflict
> that pops up incidentally, but you're probably right that it is a
> hardware problem. Would that be a replaceable device on my motherboard
> ? I have 8 USB 2.0 connectors of which 6 are in use and continue to
> work fine (printer, PDA, camera, scanner, and GPS) when the keyboard
> locks up, so I assume the USB interface is OK. But when the keyboard
> doesn't work, Windows says that the (keyboard) USB device is not
> recognised...
> paul
>

Hi Paul
Unplug all USB devices exept keyboard, and try that for a length of time.
If it works ok then it seems that you may be overloading the USB port
voltage
if so one solution would be to buy a "Mains Powered USB hub".

Chas

Thanks Chas voor the splendid idea ! Connecting all 6 USB devices to a
mains powered USB hub solved the problem. The keyboard works
perfectly, now for 10 days in a row.
paul