Monitor changes to default on restart

[Guest]

I have an IBM P96 (plug-and-pay) monitor, that I run at 85Hz refresh rate.
About every third or fourth time I restart, the monitor changes to Default
Monitor, with a refresh rate of 60Hz. I then have to go into "Find New
Hardware", when Windows immediately decides it's a PnP monitor, and I change
it to 85Hz and everything's cool again.
What is going on here? I'm using XP SP2.
P4 3.06GHz, 1GB RDRAM, AMI BIOS 07.00T, ATI All-in Wonder RADEON 7500 64MB.

 

[peter]

What you need to do is find the specific .ICM file for your monitor and
install it.
This lets XP know that you have an IBM specific monitor and not a
"plug&play" generic.
peter

 

[Guest]

The .ICM file is for Win 95 and 98, not XP.
The problem is NOT that it is identified as a generic PnP, but that it is
identified as Default Monitor - not PnP at all, and therefore not capable of
display at 85Hz.
As I said in my original post, when I go through Find New Hardware, it is
identified as PnP, and everything is peachy after that.