new pc build...random shut downs

markvcam · 12 Aug 2009 at 11:06

ok so here it is.

i bought all the parts from OcUK and yesterday i put the system together.

everything booted fine and win 7 64bit installed successfully.

however on two instances (approx 1 hour apart from each other) the pc just shut down on its own and immediately rebooted...again on it's own.

i have not overclocked anything in the system and everything is brand new.

what do you guys think?

game4it · 12 Aug 2009 at 11:26

markvcam said:
ok so here it is.

i bought all the parts from OcUK and yesterday i put the system together.

everything booted fine and win 7 64bit installed successfully.

however on two instances (approx 1 hour apart from each other) the pc just shut down on its own and immediately rebooted...again on it's own.

i have not overclocked anything in the system and everything is brand new.

what do you guys think?

System specs would help

Are temps ok? try "hwmonitor" and "coretemp" to make sure all is ok.
If its an i7 rig,have you set you ram speed/timings/volts in the bios manually?

markvcam · 12 Aug 2009 at 11:39

game4it said:
System specs would help

Are temps ok? try "hwmonitor" and "coretemp" to make sure all is ok.
If its an i7 rig,have you set you ram speed/timings/volts in the bios manually?

ah yes you're right. here are the specs:

processor: Intel Core i7 920 D0 Stepping (SLBEJ) 2.66Ghz (Nehalem) (Socket LGA1366) - Retail

motherboard: Gigabyte GA-EX58-UD3R Intel X58 (Socket 1366) PCI-Express DDR3 Motherboard

hard drives: 2 OCZ Vertex 30GB in RAID and WD Caviar Black 640GB

memory: Corsair XMS3 6GB (3x2GB) DDR3 PC3-12800C8 (1600MHz) Tri-Channel (TR3X6G1600C8)

graphics card: Sapphire ATI Radeon HD 4890 Vapor-X 1024MB GDDR5 PCI-Express Graphics Card

OS: windows 7 RC 64 bit.

in the bios all i did was set the raid and "load optimal configuration".

that's all.

game4it · 12 Aug 2009 at 11:50

markvcam said:
ah yes you're right. here are the specs:

processor: Intel Core i7 920 D0 Stepping (SLBEJ) 2.66Ghz (Nehalem) (Socket LGA1366) - Retail

motherboard: Gigabyte GA-EX58-UD3R Intel X58 (Socket 1366) PCI-Express DDR3 Motherboard

hard drives: 2 OCZ Vertex 30GB in RAID and WD Caviar Black 640GB

memory: Corsair XMS3 6GB (3x2GB) DDR3 PC3-12800C8 (1600MHz) Tri-Channel (TR3X6G1600C8)

graphics card: Sapphire ATI Radeon HD 4890 Vapor-X 1024MB GDDR5 PCI-Express Graphics Card

OS: windows 7 RC 64 bit.

in the bios all i did was set the raid and "load optimal configuration".

that's all.

Set the ram as per Corsair's specs (speed,timings.volts)
Try that and see how you get on.And dont forget to check your temps.

markvcam · 12 Aug 2009 at 11:52

game4it said:
Set the ram as per Corsair's specs (speed,timings.volts)
Try that and see how you get on.And dont forget to check your temps.

ok cool. will do.

hopefully it's something "settings" related and not hardware related.

markvcam · 12 Aug 2009 at 11:55

game4it said:
Set the ram as per Corsair's specs (speed,timings.volts)
Try that and see how you get on.And dont forget to check your temps.

by the way.

where can i get those specs from?

wozencl · 12 Aug 2009 at 11:56

As well as the above. I take it you bought a new PSU or had a decent old one?

markvcam · 12 Aug 2009 at 11:58

wozencl said:
As well as the above. I take it you bought a new PSU or had a decent old one?

ah yes forgot to list that down.

i got a new OCZ ModXStream 780W SLI Ready Modular Power Supply

mothermachine · 12 Aug 2009 at 12:02

check your temps before you change anything, so you can compare and see the difference the changes made.

wozencl · 12 Aug 2009 at 12:07

markvcam said:
ah yes forgot to list that down.

i got a new OCZ ModXStream 780W SLI Ready Modular Power Supply

That's plenty. Could be temperature related, have you had a chance to look at them yet?

game4it · 12 Aug 2009 at 12:25

markvcam said:
by the way.

where can i get those specs from?

1600MHz at latencies of 8-8-8-24 at 1.65 VDIMM.
If there is no setting for 1.65v set to 1.64v.

markvcam · 12 Aug 2009 at 12:26

wozencl said:
That's plenty. Could be temperature related, have you had a chance to look at them yet?

no not yet because i'm not at home.

will take a look late tonight and will report everything.

if temps are not high...what would be your suggestions to start with?

markvcam · 12 Aug 2009 at 12:26

game4it said:
1600MHz at latencies of 8-8-8-24 at 1.65 VDIMM.
If there is no setting for 1.65v set to 1.64v.

great thanks.

wozencl · 12 Aug 2009 at 12:39

markvcam said:
no not yet because i'm not at home.

will take a look late tonight and will report everything.

if temps are not high...what would be your suggestions to start with?

Setting RAM to recommended settings, testing the CPU to see how it copes with loads, again monitoring temps, then I'd move on to testing the system after removing different components (Try with Onboard VGA or alternative graphics card, one stick of RAM etc)

You should be able to narrow the problem down.

MasterPlan1 · 12 Aug 2009 at 12:39

check eventvwr, w7 64bit blue'd on me a few times after leaving it to sit there, something to do with power management (basically blue'd as it went to sleep) could just check to see if yours is set to hibernate\sleep.

markvcam · 12 Aug 2009 at 12:49

i'll try these out and see what happens.

what software i can use to test the cpu under load?

game4it · 12 Aug 2009 at 12:51

markvcam said:
i'll try these out and see what happens.

what software i can use to test the cpu under load?

Intel burntest is very good for that or prime95.

markvcam · 12 Aug 2009 at 13:01

game4it said:
Intel burntest is very good for that or prime95.

great. i'll try that out.

one last thing i forgot to mention is my cpu cooler.

i bought this: Akasa AK-967 Nero Direct Contact Heatpipe CPU Cooler.

also i bought the Coolermaster CM690 Dominator - NVIDIA edition which has 3 fans and i added another three.

markvcam · 13 Aug 2009 at 08:39

ok so a quick update.

(fingers crossed) it seems that the problem is resolved hopefully.

all i did was update the motherboard bios and so far so good.

my system passed both the intel burn test and prime95 tests successfully.

idle temps are about 48-50 degrees so still room for improvement but relatively happy with everything.

hopefully this will remain the case.

thanks to everyone for your help.