Hello everyone at Anandtech!
I've had this topic bookmarked as it's been extremely useful to browse and keep up to date with the board, and the wonderful
section on Overclocking by Core2 helped me complete my first overclock.
However, that is where my problem lies. On XP, I reached this overclock which was steady for 10+ Hours on Orthos:
3.2Ghz
400MHz x 8
VCore: 1.40v
NB Core: 1.563v
VCore Offset: Auto
However, upon upgrading to Vista, the overclock was rock steady during gaming, but I would receive various BSOD's 90% of the time when shutting down or putting into sleep mode.
My first action was to remove the overclock and reinstall Vista and all the drivers. It worked, everything was rock steady, no BSOD's when shutting down or putting to sleep. However, when I overclocked back to the above values, the problem started again.
Looking in Windows Event Viewer I've noticed these errors appear everytime I start my Machine (at stock and overclock):
IRQARB: ACPI BIOS does not contain an IRQ for the device in PCI slot 7, function 0. Please contact your system vendor for technical assistance.
There are 3 more of these errors, one for PCI slot 3, 5 and 6..
According to
Microsoft Support (link) These errors are not a problem and can be safely ignored. That IS the case for when my system is on stock, but when overclocked, I get the BSOD at shutdown and sleep.
So after doing my research I'm diagnosing that it's something wrong with the ACPI, but is there any way that this can be fixed? Is it not getting enough juice?
Thanks for getting this far! Any help would be extremely welcome
Kyle