Help... please... can't go on...

oceaness

oceaness

oceaness

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Joined
7 Dec 2005
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1,667
Location
Hartley
I've been trying to get the following rig up and running for a few months now:

Gigbyte GA N680SLi-DQ6 Rev.2
E6600
OCZ 2GB (2 x 1GB) PC2-8500 1066MHz Reaper HPC Edition Dual Channel DDR2
Western Digital Raptor 150GB WD1500ADFD 10,000RPM SATA 16MB Cache
320MB BFG Technology 8800GTS Overclocked, PCI-E, Mem 1600MHz, GPU 550MHz
750W Xclio PSU
Samsung SH-183LBEBN 18x18 DVD±RW Dual Layer Serial ATA Lightscribe ReWriter (Black)

Now I can't for the life of me work out whats wrong.

I've RMA'd the motherboard and the memory.
I've tested with another 750 Xclio PSU which runs my media centre 24/7
I've put the CPU into another machine and it was 100% stable.
I've tried another hard disk (though I am going to try one other as I'm not 100% sure the one I tried was healthy)

All the BIOS settings are default except the memory which I had to add 0.5v and set it to Max OC to get it to read the SPP EPP and now the memory is running at 1066MHz and the correct timings and the CPU is at 2.4GHz I've checked this with CPU-Z too and everything is set correctly.

Originally the computer would keep saying ntoskrnl.exe was corrupt just as it got to the bit where it loaded XP.

Now I have Vista x64 on it.

When I turn it on it gets to the bit where it's just about to start loading Vista and restarts, however on the second time round it loads Vista no problem at all and appears to be stable I've stressed it for about 9 hours with Orthos.

What on earth can cause this kind of behaviour?
Any help would be greatly appreciated.

Cheers,
Jack
 
Try the memory at +.1, and maybe up the vcore alittle. When the bios is set to auto, it maybe undervolting alittle.

EDIT. memory .5v? move it down to .3
 
I set it at +0.5v because thats then the voltage it's rated to run at 1066MHz.

I've checked with monitoring progs too and it's not under or overvolting

You reckon it'll run at rated specs with less voltage?
 
Just I feel that your memory might be acting up. Try the lower volts, and give the cpu alittle more juice.
 
Cool will do when I get a minute, will post here with results.

Whats the chances of two different sets of the same memory being faulty?
 
could try upping the memory voltage a bit more, spec rates at 2.3-2.4v.

any chance you have or can borrow some memory that runs at the dafault voltage of the motherboard ?
 
Alas, no.

The website I bought some of it from did say I could purchase some tried and tested memory and return it within 14 days for a refund, no questions.

Will try upping and lowering the mem voltage next chance I get.

Worst comes to worst I could buy a new motherboard and memory and a quad to upgrade the media centre and swap bits back and forth.

Incidently motherboard default is 1.8v if I add 0.5v that gets me to 2.3v. Though of course when I do that the BIOS "PC Health" section says DDR2 Voltage: FAIL, I assume cause it's so far out.
 
oceaness said:
Incidently motherboard default is 1.8v if I add 0.5v that gets me to 2.3v. Though of course when I do that the BIOS "PC Health" section says DDR2 Voltage: FAIL, I assume cause it's so far out.
Click to expand...

which might be part of the problem, if it undervolts on that as well u might put the extra through it but its dropping too much and the memory doesnt like it.
 
I don't think it undervolts, I can check the DDR2 voltage in speedfan and motherboard monitor both report it being exactly what I've set it at in the BIOS.

I will try some more volts this evening when I should finally have some time to myself :)

Incidently the same still applies this is also my second motherboard so that would mean either all N680SLI-DQ6 are pathetic or I've had two bad ones in a row.

Hmm should I get different memory or different motherboard or just another RMA.
 
mp260767 said:
which might be part of the problem, if it undervolts on that as well u might put the extra through it but its dropping too much and the memory doesnt like it.
Click to expand...

By Jove I think he's got it.

Put it up one more notch to +0.525v and it booted into Vista straight away.

If the memorys 2.3 - 2.4 I'll prob go for 2.35 and add +0.55 instead just to be on the safe side. No point in going for 2.4 unless it's unstable, don't need the extra heat and don't need to overclock at 1066MHz.

CPU will be OCed of course once I've got some proper cooling.

Any recommendations on a good cooler for ocing and silence?
 
have you tried increasing the voltage on the northbridge? it controlls all data going in and out of the RAM and cpu, and if its not stable the whole system won't be stable.
 
I've got it at 300 * 9 at the moment.

+0.55v to memory
+0.10v to FSB
Upped voltage on CPU too.

CPU reading 1.31v unloaded drops to 1.30 when loaded
RAM reading 2.35v unloaded rises to 2.37 when loaded

Temps about 65°C at full load.
 
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