Anybody know what this error's about?

A.N.Other · 12 Feb 2006 at 11:27

"AMLI: ACPI BIOS is attempting to read from an illegal IO port address (0x21), which lies in the 0x20 - 0x21 protected address range. This could lead to system instability."

Last week I changed a faulty Sapphire Pure Innovation for a new one and stuck it in. Seemed to be working alright but every now and then I get this error, which causes no blue screens (although I do have them turned on) but restarts the PC.

I've flashed the BIOS to the lastest version and updated the drivers for everything I can think of.

Any ideas

? THANKS!

lordedmond · 12 Feb 2006 at 11:34

have you got the bios set to cache to ram in the bios

A.N.Other · 12 Feb 2006 at 12:25

Both the internal and external caches are enabled.

Thanks for the reply

lordedmond · 12 Feb 2006 at 13:04

not the cpu

its the bios rom that you can cache to ram ,that can cause trouble

A.N.Other · 12 Feb 2006 at 17:05

Well I'm not intentionally doing it so I'm probably not.

Anybody else have any ideas?

Itsjody · 12 Feb 2006 at 18:23

seems to be a bios version issue with windows XP, google it

http://forums.overclockers.co.nz/showthread.php?threadid=10070

A.N.Other · 12 Feb 2006 at 22:07

Yer I think it may well be BIOS. The original one on the mobo was giving dodgy VCore readings, so I flashed it and now it brings these up (although the readings were fixed

).

I don't have a copy of the old BIOS - is there a site or something that you can download previous versions from?