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First loop complete, PC freezes Possible week PSU?

post #1 of 7
Thread Starter 
Just finished my first loop, happy with the results, no leaks, but I’m experiencing PC freezing during or just after initial boot. My first thought was the memory, 4x2gig, so I took out all but 1 stick and everything worked fine. So I experimented with different combinations, ran In Burn Test on each stick from Windows and Memtest86 from CD. All Memtest’s passed on individual and different combinations, but from within Windows whenever I have more than 1 stick in, PC freezes? I’ve come to the conclusion that, with the extra hardware in my PC, the PSU isn't powerful enough. Here's my Loop and Hardware specs:


Loop
Pump - Laing D5 / MCP655 Vario
Pump Top - Just EK D5 X-Top Rev.2
Reservoir - EK-BAY SPIN Reservoir - Acetal
Radiator - XSPC RX360 For low fan speed (1500 - 2000rpm)
CPU Water Block - EK-Supreme HF - Nickel/Plexi Thread Size 1/4" 3830046990204
GPU Water Block - XSPC GTX280
Tubing - Primochill PrimoFlex Pro LRT 1/2" ID - 3/4" OD (13-19mm) UV Red
Compression Fittings - Bitspower 1/4" Thread 1/2" ID - 3/4" OD Tubing Matt Black
Fans - Scythe Gentle Typhoon 120cm 1850rpm
Fan Controller - Lamptron FC5 v2

Hardware
PSU - Corsair HX 620w
RMA - OCZ 6400 Reaper 4x2gig
Motherboard – Asus P5N-D
BFG Nvidia 280 OC2
Creative sound card
DVD drive
Hard Drive – 3x Western Digital
Lan Card
4x Akasa UV Lights

Do you guys think it could be the PSU or something else?
Edited by Barlew - 12/21/10 at 12:33am
post #2 of 7
Your conclusion that the PSU is the culprit seems reasonable, but it may not be correct. For one thing, that PSU is more than powerful enough. For another thing, RAM isn't exactly a high wattage component. Use some software (if you don't have a multimeter) to check your PSU voltages at idle and under load. If they seem to be within ATX spec, then that's not the issue.

What happens when you downclock the RAM? Is it running at the correct specs in the first place? Are you applying the correct voltages?

Motherboards have various RAM incompatibilities so I'd pick up some cheap RAM from a local store that allows returns to try to eliminate variables if you can.
Big Bertha MKII
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 @ 4.0 P7 P55 WS 580 Tri-SLI + GT 240 8GB 
Hard DriveOptical DriveMonitorPower
90GB Vertex 2 SSD + 1TB F3 Asus BD-ROM 3 x Asus VG236 (120hz/3D) Antec HCP-1200 
Case
Corsair 700D + window 
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Big Bertha MKII
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 @ 4.0 P7 P55 WS 580 Tri-SLI + GT 240 8GB 
Hard DriveOptical DriveMonitorPower
90GB Vertex 2 SSD + 1TB F3 Asus BD-ROM 3 x Asus VG236 (120hz/3D) Antec HCP-1200 
Case
Corsair 700D + window 
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post #3 of 7
Thread Starter 
I’m not currently overclocking and have the same motherboard/ram set up as before i built the loop. System was working flawlessly before Loop.

I just removed the Akasa UV tubing and the system seems more stable. Was able to run In Burn Test in windows on all 4 Ram sticks for 1hr. Unfortunately when running test again i opened Event Viewer and SIW (system information for Windows) to check Ram and the system froze?

SIW shows all Ram at the same specs/voltage.
post #4 of 7
as mentioned before the PSU is more than enough, and i agree.

i've had exactly the same problem when i got my loop
Though, with my ram i accedentally bumped against my banks and one of the pins bent, thus instable due to a half / not connecting pin on the memory banks.

I'd ask a friend to test your ram in his pc, if that runs well use his ram in your pc and see how it goes.

If you still get errors it'll probably be your motherboard.


Edit: i just wanted to mention that it can happen that your CPU isn't properly placed (since you probably removed it to apply new TIM), which can cause system freezes as well.

do you have the CPU pins on the motherboard by chance? (s775)
it can be so that one of them got lame and doesn't connect properly as well
Edited by ericie - 12/21/10 at 5:36am
Main PC
(13 items)
 
Asus N75SF
(10 items)
 
 
CPUMotherboardGraphicsRAM
2600k @4,5 1,325v P8P67 Deluxe 2x Asus 780GTX CU-II 1.2ghz, NVS450 Dominators @ 1600 7-8-7-20 
Hard DriveCoolingMonitorKeyboard
250, 128GB SSD, 12TB NAS Swiftech MCR320 - GT AP-15 Dell U3011, 3x U2211H (wtb 4th), HC5500 > 90" Ducky Shine 2 TKL Blue switch 
PowerCaseMouseAudio
AX850 Lian Li PC9F (silenced by Caseking) Roccat Kone XTD Sphinx Project 10, M1 DAC, Mirage M3-Si, HE-500... 
CPUMotherboardGraphicsRAM
Intel 2630QM Asus N75 HM65 GT555M 6 Gig 
Hard DriveOptical DriveOSMonitor
500 Gig Multi DVD drive Windows 7 Ultimate x64 17"  
Mouse PadAudio
Synaptics B&O ICE Power 
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Main PC
(13 items)
 
Asus N75SF
(10 items)
 
 
CPUMotherboardGraphicsRAM
2600k @4,5 1,325v P8P67 Deluxe 2x Asus 780GTX CU-II 1.2ghz, NVS450 Dominators @ 1600 7-8-7-20 
Hard DriveCoolingMonitorKeyboard
250, 128GB SSD, 12TB NAS Swiftech MCR320 - GT AP-15 Dell U3011, 3x U2211H (wtb 4th), HC5500 > 90" Ducky Shine 2 TKL Blue switch 
PowerCaseMouseAudio
AX850 Lian Li PC9F (silenced by Caseking) Roccat Kone XTD Sphinx Project 10, M1 DAC, Mirage M3-Si, HE-500... 
CPUMotherboardGraphicsRAM
Intel 2630QM Asus N75 HM65 GT555M 6 Gig 
Hard DriveOptical DriveOSMonitor
500 Gig Multi DVD drive Windows 7 Ultimate x64 17"  
Mouse PadAudio
Synaptics B&O ICE Power 
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Reply
post #5 of 7
Oh, you didn't mention that it was already up and running prior to loop installation.

You must have knocked something around, possibly damaged it with ESD if it's a RAM stick.
Big Bertha MKII
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 @ 4.0 P7 P55 WS 580 Tri-SLI + GT 240 8GB 
Hard DriveOptical DriveMonitorPower
90GB Vertex 2 SSD + 1TB F3 Asus BD-ROM 3 x Asus VG236 (120hz/3D) Antec HCP-1200 
Case
Corsair 700D + window 
  hide details  
Reply
Big Bertha MKII
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 @ 4.0 P7 P55 WS 580 Tri-SLI + GT 240 8GB 
Hard DriveOptical DriveMonitorPower
90GB Vertex 2 SSD + 1TB F3 Asus BD-ROM 3 x Asus VG236 (120hz/3D) Antec HCP-1200 
Case
Corsair 700D + window 
  hide details  
Reply
post #6 of 7
    
CPUMotherboardGraphicsRAM
i7 4930K Rampage IV Gene SLI Evga GTX 780 Classy 16Gb TeamX2400c9 
Hard DriveCoolingOSMonitor
Samsung 840 Pro/ Hitachi Deskstar 1TB  H20 (NexXxoS 420+280) w7x64 VG248QE 
KeyboardPowerMouseAudio
Logitech G110 SuperNOVA 1300 G2 G502 Proteus Core Foobar2K/WASAPI >NuForce Icon HDP >Crack with S... 
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CPUMotherboardGraphicsRAM
i7 4930K Rampage IV Gene SLI Evga GTX 780 Classy 16Gb TeamX2400c9 
Hard DriveCoolingOSMonitor
Samsung 840 Pro/ Hitachi Deskstar 1TB  H20 (NexXxoS 420+280) w7x64 VG248QE 
KeyboardPowerMouseAudio
Logitech G110 SuperNOVA 1300 G2 G502 Proteus Core Foobar2K/WASAPI >NuForce Icon HDP >Crack with S... 
  hide details  
Reply
post #7 of 7
Thread Starter 
@ericie
Quote:
do you have the CPU pins on the motherboard by chance? (s775)
it can be so that one of them got lame and doesn't connect properly as well
Just drained loop, took a good look at the cpu pins on the motherboard with a magnifying glass and didnt see anything suspect.

@coolhandluke41
Thanks, been looking for an updated one of these. My specs come in at 599w, although im getting a sinking feeling that it isnt the PSU

Gonna run some more tests using Prime and In Burn Test on different Ram set ups.
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