Resolved Windows XP Pro Event Viewer ERROR: System

I checked the event viewer, and under system seen the following errors Source: ACPI Category: NONE Type Error. There are two ID's 4 and 5 both with the same discription. Description: AMLI is attempting to writh to an illegal I/O port address(0x74) which lies in the 0x74-0x76 protected address range. This could cause system instability. Please contact your system vendor for technical assistance. Is there a way to correct this The BIOS has the latest update. Is there something in the BIOS that I maybe overlooking.

 

we had a good discussion on this a while back http://www.windowsbbs.com/showthread.php?t=34014&highlight=amli


Are you *SURE* you have the latest bios? Becuase if you are, you dont have much choice but to revert HALs.

 

I'm positive I have the latest BIOS update. How do you revert the HALs. I really do not want to do a repair install. I was reading the one response from the link you gave me that said you can change to standard computer in the Device manager. Is there a trick to doing this and how would you do it? I went Computer ACPI and it told me that the device is working properly. Should I still worry about the ACPI error in the Event Viewer?

 

Anyone have any ideas short of reinstalling the OS and if I erase the drive with Compaq Hard Sisk Drive Tools, perform a clean install of the OS will that take care of the problem, or will it return?

 

switching is pretty easy. its recovering after it doesnt come back up if something goes wrong that can get nasty.

See here.. its pretty clear that the best way is an 'in place' upgrade.
http://support.microsoft.com/default.aspx?scid=kb;EN-US;237556

 

If I change to Standard PC then I'll have to shut down manually. Compaq advised me that the BIOS may not be XP compatible they didn't know for sure. I read somewhere about BIOS protocol not being in place back in 2000 or earlier. But don't quote me on that. When I asked the Compaq Tech about system instibility. I guess the Tech did some research then got back to me and advised that if I could live with the error in the event viewer there should be nothing to worry about. The system has been up and running for about a week now without any issues. I was also advised that I could erase the drive and perform a clean install again, and see if that corrects the problem. I wish I could find an easier way but I guess there isn't one.

 

How and where would you look to find out what is trying to write to the illegal I/O port address (0x74 and 0x75) in the 0x74-0x76 protected address range?

 

I checked every piece of hardware in the machine and I'm still getting the error in the event viewer. Anyone have any other tests.

 

0x74-0x76 protected address range is Extended CMOS. How do you figure what's trying to write to it?

 

hook up a kernel debugger, set a ba i 74, dump the stack when it hits it. Note that its the BIOS itself doing it. Realize your kung fu is insufficient to decode AML. Have a beer and wax poetic on the joys of technology, then in the morning, install standard pc HAL.

or, realize that you are tilting a windmill, and go to standard pc HAL.

 

Maybe I'm being too critical. Maybe I should just listen to what Compaq said "A reinstall might or might not correct the problem. There's no guarantee, and if it's running without any problems and if I can live with the error in the event viewer then leave it alone. There shouldn't be any instability issues ". I guess what they were trying to tell me was "If ain't broke don't fix it ".