Gigabyte GA-P35C-DS3R keeps reseting itself

DamanC

DamanC

DamanC

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27 Aug 2004
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384
Hi Guys, A little bit of advice please.

Built myself a new rig;

Gigabyte GA-P35C-DS3R
Intel Core 2 Duo E6750
Gainwood 8800GT
4GB OCZ PC6400 platinum
Hyper Type R 580W

Clocked it, and 50% of the time from a cold boot (left overnight and day) it looses all my preset FSB settings. It will start up for around 4 seconds, power off for a couple of seconds, come back on for a second or two, go for a second or two and then fire up as normal with stock FSB. Voltages do not change, only the FSB and memory timings (if I manually set them)

BIOS is Version F6 (2007/10/29)

I followed the Gigabyte guide found here

CPU Enhanced Halt (C1E), CPU Thermal Monitor 2(TM2), CPU EIST Function all disabled

Voltages have been upped;

.3v to Memory
.1 to fsb
.1 to MCH

Vcore voltage has been left stock or 1.35, im fairly sure it was doing this when it was higher (1.4) too, but cannot confirm.

System Memory Multiplier is 2.00

FSB has been between set @ 400/410 and 415 all @ x8, all stable with 8 hours of CPU testing in Orthos. Idles temps areound 45 and load around 65.

I have tried manaully setting memory timings (4-4-4-4-12) or leaving them @ auto (5-5-5-5-15) and it makes no difference.

I have read that the 'legacy usb support' sometimes plays up, I have diassabled this and still the problem exists.

Any ideas/pointers guys?

Cheers
 
I have the exact same issue with the following spec

OCZ 4GB (2 x 2GB) PC2-6400C5 Dual Channel Vista Gold Series DDR2

Gigabyte 3D Aurora Black

Corsair HX 620W ATX2.2 Modular SLI Compliant PSU

Intel Core 2 Quad Pro Q6600 "Energy Efficient 95W Edition" 2.40GHz (SLCAR revision)

Gigabyte GA_P35C_DS3R (Socket 775) PCI-Express DDR2 & DDR3 Motherboard

Leadtek GeForce 8800 GTS 640MB GDDR3 HDTV/Dual DVI (PCI-Express)


I've given up and just enjoying it on Stock right now, very disappointing though.
 
I had the same issue. Solved it by upping the vcore one notch. Now all is stable.
 
Matt - have you tried leaving the memory timings on Auto?

Im @ 3.6GHz not (thermalright ultra 120 Extreme now installed) and so far for the last couple of days its all been good, but time will tell.

Memory is @ 5-6-6-17 according to CPU-Z. Is that a bad thing?
 
A little update that maybe of some use to someone. I have romped the Processor upto 3.6GHz and left the memory timings on auto. Has been fine for a while so then manually set the memory timings to 5-5-5-15 and again has been behaving itself :)
 
Sounds like something wasn't stable. I have the P965 version of that board, and if it can't boot with the current settings it will shut itself down and start up on default settings. I reckon that's what was happening - sounds like your memory settings were on the edge of stability. It's actually pretty useful as it stops you having to reset CMOS when you overclock too far.
 
I have the same issue with rig in sig.. it has been fine up until booting the last few mornings, will try auto mem settings.
 
I'm also seeing this issue on a gigbyte p35-DS4, can overclock completely stable and reset no probs but on cold boot it'll fail to keep the oc settings. It does exactly as OP states, starts for a few seconds and then falls back to orig settings for FSB, mem strap/timings and PCI clock. I've googled all over but no-one seems to have a concrete solution - if anyone knows how to fix this I'd be extremely grateful.

I'm on the F8 bios and the board rev is 1.1 - I'd be interested to know if anyone with v2 has this issue?

Ta
 
I had an issue with OCing at one point. Turns out it was only when I had my 20GB hdd mp3 player plugged into the USB port.

I don't know how or why this affected it, but it did. So one thing for you guys to try is unplug all non-essetial USB devices and see if you still have the problem.
 
I've just put together my new rig (yesterday) and have been having the exact same problem. Running with e2180, and Geil RAM 2gb ddr2. The last few boots it seems to have stopped. It's weird, I've been playing around clocking it so I've changed so many settings I can't say which one could have fixed (if it is fixed).

I think ffallic could be on to something as I had a usb device plugged in too. Also, I did change that alternative RAM setting from option 1 to option 2 - could have had an affect?
 
ffallic said:
I had an issue with OCing at one point. Turns out it was only when I had my 20GB hdd mp3 player plugged into the USB port.

I don't know how or why this affected it, but it did. So one thing for you guys to try is unplug all non-essetial USB devices and see if you still have the problem.
Click to expand...

The only USB device I've plugged in is a mouse - will try without to see if that's better. I recall trying enabling/disabling legacy USB support but had no effect.
 
Also, the F7 bios is up on the page. Might be worth trying if nothing else works

Edit: just thought, the F7 bios may be only for the P35, and not the P35C.
 
mal5 said:
The only USB device I've plugged in is a mouse - will try without to see if that's better. I recall trying enabling/disabling legacy USB support but had no effect.
Click to expand...

I've checked this again - problem is that I left the machine in standby so it happily comes back as good with all OC settings. I tried cold boots but it still holds OK - seems to need a few hours before the problem comes back. I'll check again tomorrow but glad that standby may be a workaround. Maybe keeping the RAM under power while in standby prevents the issue?
 
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