damaged BQT S6-SYS-UA 550W
First of all sorry if I type in english.
My PSU is this
My system has random freezes but I found a "condition" to make the system freeze almost for sure (useful to test if freeze problem is solved):
-overnight memtest or overnight resting in bios setting page
The problem is related with the supply for the video card but the strange thing is that the system seems not suffer stress test at all! Freezes are completely random.
I found that using a "molex to PCI-E" converter I can drain power from a different rail (instead of using the rail that provides the two PCI-E power connectors) and I have no more freezes!
So the issue is 100% power supply related.
What do you think? Is there the possibility my power connections are not well balanced? (I means if there is something that drain power from the PCI-E rail).
My system is minimal:
ASROCK AM3 870 EXTREME3
AMD Phenom II X2 550 3.1Ghz
Be Quiet SYSTEM POWER BQT S6-SYS-UA-550W bulk
ATI HD5770 Sapphire 1GB Vapor-X 2xDVI/HDMI/DP
Western Digital 1TB WD1002FAEX 7200rpm 64MB Black
DDR3 1600Mhz PC12800 4GB Corsair XMS3 --CL--8-- Skt1156 (2x2GB) Corsair CMX4GX3M2A1600C8
No need to apologise for not posting it in German.
The freezes you mentioned are normally not caused by the PSU.
Have you flashed the latest BIOS update for your mainboard?
And Checked the memory settings in the BIOS?
Hi thank you for your reply.
Before coming here I have done almost all tests to find out the "faulty" component.
In first even I thought was 100% memory issue so I started working on timings, frequency, voltages with no result, but then I find out system could freeze even simply staying in bios setting page (I mean was not necessary a memtest).
I use memtest overnight as a "stress test" to make system freeze, otherwise with the OS loaded I can stay several day (5-6 days even without freezes). I have to say freezes can happens even in idle.
I had no many chances to swap components with temporary ones, but one day I tried a new video card: ATI 5450 that doesn't need a PCI-E power connector. All was fine memtest freeze no more.
So all my research bring me absolutely to: my ATI 5770 VGA card, power supply. I would say 70% VGA faulty 30% power supply faulty.
With the VGA there is in bundle a "molex to PCI-E power" connector so I started to make this kind of test: supply the VGA NOT with the two PCI-E connectors that are provided by the PSU (with both the test freezes) but drain power with the converter above.
In fact the converter let me choose the "molex" from which I can drain power, and soon I found one rail that make the test freeze no more.
So now I can say there is a supply issue.
My motherboard and VGA bios are updated, asrock says me that ATI5770 is supported from bios version 1.60 that is the latest so the one I already installed.
I am starting to think: because I read (now) ATI5770 need minumum 18A on rail +12V, my power supply has exact 18A on rail +12V but I think that are not real 18A, so maybe can this be the problem?
If draining power with this "molex to PCI-E" converter connector (placed in an appropriate rail) make the system freeze no more, I can say power supply is fine but maybe who assembled my desktop overload some rail?
Any idea? Thanks
edit: fresh update freeze occur the same few minutes ago while I was in windows. And I was with the molex to PCI-E converter so with the configuration that make the overnight test no freeze. I thought I had solved so probably the issue is not PSU related. I am confused
Geändert von Boooooo (22.11.2010 um 12:16 Uhr)
Can you test another graphics card with a PCIe connector in your system?
hope to have a chance soon.
Probably I can have soon a chance for testing a new memory, I read of many people having similar problems with that Corsair memory.
I will keep you updated
I wish you luck and hope that you'll find the cause of the freezes.
Probably solved, the issue is memory related. This not means my memory is faulty (in fact each stick make system freeze, that is improbable both stick are faulty, moreover never had a memtest86+ error error or a BSOD) but a kind of really weird incompatibility.
The most incredible thing is that swapping VGA with another that doesn't need power supply make memtest86+ works properly even for hours, thing that let me conclude was a VGA or power supply issue, but from latest tests I have no freezes with a new brand memory stick.
Is the exact issue reported by this guy here
I contacted him and we do not have any common hardware except from very similar memory.
Other few days of test and maybe I can say the word END
Many thanks for your feedback and nice to hear that you've resolved that issue.