On Jul 19, 10:57*pm, "
wrote:
I have tried 2 different mice (a Logitech and a Microsoft) on my
laptop running Windows XP Pro SP3, and both of them were jerky. *I
finally traced the problem to the built-in ethernet adapter. *Once I
go into the Device Manager and disable the Intel Pro/1000 PL network
adapter, then the mouse will be smooth. *It will still be smooth even
if I subsequently re-enable the network adapter. *But if I restart
Windows with the network adapter enabled, then the mouse will be jerky
again.

Not sure what's going on here, maybe it's a resource issue. *I noticed
that the network adapter is on IRQ 16, and one of the USB Universal
Host Controllers is also on IRQ 16. *But Windows won't let me change
any of the resource settings for the mouse or the network adapter. *I
also tried a different USB port and still had the same problem.

Any idea on how to fix this?

If not, then is there a way to disable and enable devices from the
command line? *I'll just have a script disable and re-enable the
network adapter on startup.

Have you ever installed or updated the motherboard chipset drivers?
The chipset drivers are a collection of important drivers that tell
Windows XP how to correctly access the motherboard component. One
important driver contains the IRQ request control. This could help.