[ricp]

The saga continues. So far I have done the following:

Reformated and reinstalled Windows XP.
Removed and reinserted CMOS battery.
Reflashed BIOS.
Replaced PS2 mouse with USB which worked fine.

I considered just using USB mouse and be done. But, I am not confident that this undiagnosed problem will not come back and bite me. The problem looks software related. Can any of you geeks think of anything else?

Incidently, I mistated my PC type. It is an Asus P4C800E-Delux vs. P4P800.

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You said you replaced the PS/2 mouse with a USB one which worked fine, but have you tried a different PS/2 mouse altogether? Remember, you can't hot-swap PS/2 mice like you can USB ones, so make sure you power down your computer before attaching the new PS/2 mouse (removing the USB one as well) and then turn on your computer and see what happens.

Fenor

[Fenor]

You said you replaced the PS/2 mouse with a USB one which worked fine, but have you tried a different PS/2 mouse altogether? Remember, you can't hot-swap PS/2 mice like you can USB ones, so make sure you power down your computer before attaching the new PS/2 mouse (removing the USB one as well) and then turn on your computer and see what happens.

Fenor

[ricp]

Fenor,

Forgot to mention that one. I did replace the PS2 mouse with another PS2 with no luck.

[Fenor]

Then most likely the PS/2 port is damaged. I wouldn't really worry about it, USB mice work a lot better then PS/2 mice. Just stick with the USB mouse and you will be fine.

Fenor

[ricp]

I will use a USB mouse. But, as I stated, the problem behaves as if it software related.

[Fenor]

It's not software related. You said you reformatted windows and the problem still persists. Most likely the PS/2 port got shorted somehow and that caused it to start behaving erratically. It happens all the time. I can't count the number of times I've seen PS/2 ports go bad. It is definitely a hardware issue, not a software one.

Fenor

[ricp]

Fenor,

Fine. I will proceed with the USB mouse and consider this issue resolved. Thanks to all for your help.