DS4, BSOD on iastor.sys - heat issue

Associate
Joined
18 Oct 2002
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725
Location
York
Hi, not sure whether this is best posted in this forum or motherboards.

Rig is E6600 on a DS4 with 2GB Crucial 10th anniversary. CPU running at 3.6 of 1.3625v (about 1.33 in BIOS). GFX is X1950Pro. CPU and GFX are watercooled with Storm/EK Block on a 120.3 rad.

Important bit, the rig sits in a v2000 so the motherboard is upside down. The northbridge heatsink (and I8CHR southbridge) is two sheets of copper with fins in the middle and heatpipes running to around the CPU area.

The Northbridge sits at around 70C and the southbridge will be as hot if not hotter. WinXP is installed on RAID 0+1 (or 10) on the I8CHR. Cooling is under the floor with a nexus fan pulling out near the ATX plate - no other fans in there. The winXP drives are sat oppposite the southbridge in the 5.25 bays (4 HDD).

Now could this crash be too much heat, the SATA drivers installed at the start of the winXP install (press F6 and on a floppy) are the latest from the intel site.

I have room for a quiet 120mm fans which I could put between the HDD and front bezel to blow air across the HDD and then towards the I8CHR sink - would this cool it enough

Could I stick a passive Zalman on this - would that work, what about other coolers -

Could it be a driver issue, not enought volts? too much volts? is there voltage control for the I8CHR in the BIOS?

So many questions - sorry peeps, but any help appreciated.

TIA
 
Associate
OP
Joined
18 Oct 2002
Posts
725
Location
York
I havent tested with prime but got 11hrs stable on orthos at 1.35 (around 1.3125 in BIOS).

I also ran TAT successfully for quite a while and am now running BOINC. SETI under BOINC uses FFT calculations and coincidentally so does Orthos.

I have run it at 1.45 too and got similar results. The boards is more stressed now with all the additional harware (10 SATA drives, plus 2 DVD-RW's).

So would you say the BSOD in the iastor.sys is nothing related to the hardware (ie southbridge) and is all to with the software (CPU)?

Cheers
 
Associate
Joined
23 May 2005
Posts
812
Location
Hove
Motherboard sitting upside down isn't that great for heatpipes, so it could possibly be a heat issue. Best suggestion is to load default voltage (especially through the northbridge) and clocks, possibly point a fan at the bridge chips and see how it goes.
 
Soldato
Joined
18 Oct 2002
Posts
24,560
Location
Amsterdam,The Netherlands
If you have a spare fan try pointing that towards the north or southbridge and see if that helps.

I doubt a Zalman passive heatsink will be any better than the stock cooling.

googling iastor.sys gave a LOT of pages with references to a BSOD so it look slike a common problem, maybe you can find other people that have already fixed their issue?
 
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