Motherboard Help - P8Z77 WS

LtMatt

LtMatt

LtMatt

Caporegime
Joined
12 Jul 2007
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I'm having a minor issue with my motherboard. Sometimes it will not post and just hangs. I have a post error of 96 flashing up. Upon some googling that indicates a PCI Bus Assign Resources warning or something. If i then turn the pc back off and turn it back on it works normally. Or if i click restart as it hangs it will startup ok. I notice the ethernet lights are on so i think its the boards Intel 82574L gigabit connection causing the problem. Any suggestions on how to fix this? So far ive tried using Windows intel drivers and using the proper intel drivers. Neither seem to help. There is not much to be found on the internet regarding my mobo and this post error code. I did find this though, but no solution posted.

http://rog.asus.com/forum/showthread.php?6467-Post-error-code-96-(HD6990-as-video)
http://www.tomshardware.co.uk/forum/308688-30-asus-p8z68-deluxe-gen3-code-error-vga_led
http://vip.asus.com/forum/view.aspx...rd_id=1&model=P8Z77+WS&page=1&SLanguage=en-us
 
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Yes running cpu and memory overclocks but i don't think thats the issue. I will try it if it keeps up though. I've noticed that it only occurs after the pc has been switched off for a long term. Just tried to re-create it again now and it works fine. The boot sequence completed successfully this time. Code 96 on the Q code led is the last one that comes up before it boots. Sometimes, it gets stuck on that code.
 
I'd at least start by removing the memory oc, if memory is on the edge of stability it can cause some often strange errors.

Other then that, force PCI gen2/legacy and throw on the very latest beta bios.

Just a thought with all this xdma whatsit, do you have the option to provide dedicated power to the PCI lanes?

No crashes while gaming either?
 
pgi947 said:
I'd at least start by removing the memory oc, if memory is on the edge of stability it can cause some often strange errors.

Other then that, force PCI gen2/legacy and throw on the very latest beta bios.

Just a thought with all this xdma whatsit, do you have the option to provide dedicated power to the PCI lanes?

No crashes while gaming either?
Click to expand...

Overclock is definitely stable. Passed 20+ runs of intel burn very high. No crashes while gaming or anything. This is literally just a boot up detection problem. Something to do with the pci bus resources assign.

Don't think i can force PCI Gen 2. Don't see an option for it on the mobo in the bios.

I don't see an option either for dedicated power to the pci lanes.

As its hard to reproduce and only occurs after the pc has been off for a while its going to take me a while to figure out i reckon. I will keep changing the odd thing in bios and hope that eventually it fixes itself. I just tried selecting PCI-E rather than Auto and letting it choose between the PCI-E gpu's and the onboard gpu. I also disabled render standby on the onboard gpu, even though i have lucid disabled. Will just keep trying something different everyday i guess. I can send it back for a replacement if needed, but i want to try and avoid it if there is a way i can fix it myself.
 
Some bios pics including one similar to the one scotty posted. Not seeing an option to force pci-e 2. Maybe thats not an option because im using a sandybride cpu??


OgSEqrg.jpg


4uVqIP9.jpg


Brhubz8.jpg


DzKt2MG.jpg

Ignore the cpu target speed showing 4.4ghz. I underclocked a bit to run a hitman bench. Normally that reads 4.8.
 
You sure?
It's just that I have the graphics option that you posted as well as the NB PCIe configuration choice which does give the option to switch between Auto/Gen1/Gen2 and shows the lane bandwidths.
 
Uncle Petey said:
You sure?
It's just that I have the graphics option that you posted as well as the NB PCIe configuration choice which does give the option to switch between Auto/Gen1/Gen2 and shows the lane bandwidths.
Click to expand...

LtMatt said:
I'll take a piccy, sec.
Click to expand...

ran2S3b.jpg


wazza300 said:
Do you have pll overvoltage disabled? Try that with cold boot issues
Click to expand...

Yes its disabled and i run it at 1.5v. I have to enable it if i go over 4.8ghz though. I suppose i could try enabling it and putting it back to default 1.8v but id be surprised if this had anything to do with it tbh.
 
Shankly was having cold boots he said disabling cured it,it could also be down to poor BIOS support for sandy chip on z77,see it a few times on gigabyte

Cold boots/loops are usually ram voltage/setting related
 
Ok its doing it frequently now. The Q code is now 93 and the vga led is lit up on pci-e slot 1. The pc beeps normally, but display stays off and Q code 93 is displayed. If i press restart it boost normally into windows and works fine. I've tried all possible PLL overvoltage settings, its nothing to do with that. I have the BCLK overclocked by a tiny amount, (100.1) next ill try removing that.
 
So im now trying with BCLK at 100 instead of 100.1 and first boot worked ok, but not sure its solved yet. The reason why i set 100.1 was because otherwise it shows up as 99.98 Any idea of another way around this? CPu spread spectrum is disabled.


OXRgNCb.jpg
 
Just a thought but is speed step enabled/kicking in? As 1.064v at x48 isn't right, it should knock down to x16.

According to the Interweb 93 is something called PCI bus hotplug controller initialisation, certainly sounds related to the base clock.
 
pgi947 said:
Just a thought but is speed step enabled/kicking in? As 1.064v at x48 isn't right, it should knock down to x16.

According to the Interweb 93 is something called PCI bus hotplug controller initialisation, certainly sounds related to the base clock.
Click to expand...

Good point pg tips, however that one can be explained. I was using high performance mode in windows to do some hitman benches. Normally the cpu would clock down.

I'm beginning to think its because i have the BCLK at 100.1. Damn thats annoying. I'm now experimenting with increasing VCCIO and other voltages.
 
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