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Asus P7P55D + i7 860 + GTS250 freezing a lot !

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May 18, 2010 3:16:57 PM

Hi, I just assembled the following system:
Intel i7-860
ASUS P7P55D (Updated to the most recent BIOS, 1408)
XFX GTS 250 1GB PCI-E HDMI
OCZ 4GB(2x2GB) XMP 1333MHz (OCZ3X13334GK)
2x Seagate 7200RPM HDD's with RAID 0
Corsair 650W TX
Windows 7 Retail 64bit
(ubuntu 10.04 dual boot)

The system boots up ok, but whenever I boot into Windows, it freezes within 10 minutes. If I run "Video Stability Test" program, which rotates a 3D earth image, it immediately hard freezes within 15 seconds.
It also freezes in Linux, but much less frequently - about once every 4 hours.
The images on the screen just holds still; not blank and no mouse or keyboard inputs.

I have replaced BOTH CPU & VGA to a brand new ones, but the problem persists.

I even tested RAM using MemTest86+ boot CD, had no errors over 20 hours.
(Screen shot:
http://dl.dropbox.com/u/2509617/temp/memtest86.jpg )
One weird thing is that memtest shows as PC3-8500, not PC3-10666, although the place I bought shows PC3-10666. (http://www.dabs.com/products/ocz-technology-ddr3-4gb--2...)
I've set DRAM settings manually as directed.


I have read http://www.tomshardware.com/forum/265437-30-asus-p7p55d..., http://www.tomshardware.com/forum/263455-30-p7p55d-memr..., and http://www.ocztechnologyforum.com/forum/showthread.php?..., but didn't work for me...

Could anybody please help me on this weird problem? I am really frustrated now. Do you guys think the MOBO is the only problem left?

Best solution

Anonymous
a b V Motherboard
May 29, 2010 7:59:15 PM
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My system is almost identical to yours. I'm running Win 7 Ultimate and have been having the same problem you described. In my case I could run in safe mode, but after booting in full mode experienced random freezing--sometimes within a minute of logging in. The type of freeze I experienced was an inability to move the mouse or use the keyboard--just as you described. Had to do manual power switch restart.

I have just tweaked the BIOS to slow the CPU to the minimum speed allowable and turned off the turbo mode. So far no freezes. Apparently freezing is a big problem for Win7. See this thread:



I did the bios adjustment above partly in response to a suggestion on this thread. Perhaps this would work for you.
a b Ĉ ASUS
a b V Motherboard
June 2, 2010 11:23:28 AM

Have you enabled XMP mode in BIOS\Ai Overclock Tuner for your RAM modules ?

It could also be a gfx card driver problem. I suggest you test with a different driver set after uninstalling the current drivers and then running a program like driver sweeper/driver cleaner (I prefer manual cleaning of registry and files) in Safe Mode and finally removing the gfx card in Device Manager.

Hope this helps.
Related resources
June 9, 2010 9:56:24 AM

Thanks suat, but since I also experience this problem in Linux(ubuntu 10.04), I think there are other problems causing this. Actually, I have tried reinstalling the driver, too.
Meanwhile, I've changed the RAM to low voltage Crucial 1333MHz 1.5V (my RAM was 1.75v) and still having the same problem. However, when I put only one stick in either slot, the computer is completely stable. It only freezes when I put both sticks. So I'm trying on another MOBO now. I'll post if I have any progress.
June 11, 2010 1:37:17 PM

Finally. Fixed.

The problem for me was both incompatible RAM and defective MOBO.
As there was no OCZ memories in stock at the moment from where I bought, I tried the low voltage 2 x Crucial 2GB 1.5V 1333MHz(CT25664BA1339.16FF), which is also included in http://www.intel.com/technology/memory/ddr/valid/ddr3_n....

The problem got better, but still having some freezing problem. The interesting thing was, when I put only 1 stick(2GB) on either slot, the system becomes stable. But when I put both sticks, the system randomly crashes again.
It passes on memtest86+, but freezes on HCI design's memtest program. (HCI's memtest seems to be more accurate.)

One thing I noticed was that on BIOS of Asus P7P55D, DRAM voltage was automatically set to 1.49V, instead of 1.5V. However, the problem persisted even if I changed it to 1.5V or 1.55V. I even tried higher IMC voltages, but no difference.

As my last hope, I changed the MOBO to Gigabyte GA-P55A-UD4 5 days ago, and the system is perfectly stable now. I've done some extreme tests(Prime95, memtest86+, memtest by HCI, OCCT, Video Stability Test) and everything was perfect. Just perfect.

Another interesting thing is that now my Windows 7 64 bit reports my HDD performance as 6.1, which was 5.9 on P7P55D.
Of course, I don't trust that number, as they have some problems on evaluating RAID0 disks. But at least, I don't feel bad.

The following site also contains lots of resources, where this random freezing problems have discussed to death.
http://social.answers.microsoft.com/Forums/en/w7repair/...

Hope this is helpful to someone.
I always used only ASUS MOBO for 10+ years, but I think it's time to break my stereotype.
June 21, 2010 10:46:41 AM

Best answer selected by leekyuh.
Anonymous
a b V Motherboard
July 28, 2010 8:25:19 AM

leekyuh said:
Finally. Fixed.

The problem for me was both incompatible RAM and defective MOBO.
As there was no OCZ memories in stock at the moment from where I bought, I tried the low voltage 2 x Crucial 2GB 1.5V 1333MHz(CT25664BA1339.16FF), which is also included in http://www.intel.com/technology/memory/ddr/valid/ddr3_n....

The problem got better, but still having some freezing problem. The interesting thing was, when I put only 1 stick(2GB) on either slot, the system becomes stable. But when I put both sticks, the system randomly crashes again.
It passes on memtest86+, but freezes on HCI design's memtest program. (HCI's memtest seems to be more accurate.)

One thing I noticed was that on BIOS of Asus P7P55D, DRAM voltage was automatically set to 1.49V, instead of 1.5V. However, the problem persisted even if I changed it to 1.5V or 1.55V. I even tried higher IMC voltages, but no difference.

As my last hope, I changed the MOBO to Gigabyte GA-P55A-UD4 5 days ago, and the system is perfectly stable now. I've done some extreme tests(Prime95, memtest86+, memtest by HCI, OCCT, Video Stability Test) and everything was perfect. Just perfect.

Another interesting thing is that now my Windows 7 64 bit reports my HDD performance as 6.1, which was 5.9 on P7P55D.
Of course, I don't trust that number, as they have some problems on evaluating RAID0 disks. But at least, I don't feel bad.

The following site also contains lots of resources, where this random freezing problems have discussed to death.
http://social.answers.microsoft.com/Forums/en/w7repair/...

Hope this is helpful to someone.
I always used only ASUS MOBO for 10+ years, but I think it's time to break my stereotype.


after doing random research on the 1156 form factor and the p55 chipset in particular you might find it has some unsettling issues. for example.. i purchased two FAX black 1tb caviars sata 3 capable with a Gigabyte GA-P55A-UD3P sata 3 raid board. supposedly supporting modes 0/1/5/10 in sata 3 mode giving supposedly 4 times the speed in raid 0. Naturally i thought id test this. So i raided two gen 3 drives to find. That they only show up in gen 2 modewithin the matrix software (although yet to test proper throughput over gigabit to another raid array). from what i can see there is no gen 3 mode. (and yes ive varified the bios sata3 settings and raid settings to be correct and the latest bios). the reason being after some research is the p55 limitation of lane pathways (worse in asus p55 platforms than gigabyte also). If your running sata 3 in XHD mode and raid you will lose cross fire / sli and also slowdown the pcie-x multiplier from 16x to 8x.. for it to support the turbo sata 3 mode or the turbo usb 3.0 mode. gigabyte engineers basically said thats the p55's limitation over the x58 platform. it doesnt have enough lanes to support all those devices. Hence marketing scams abound.
btw i went i5 650 (for under $150) clocked in at 3.2ghz standard as the dual core with a 4mb cache. heaps suitable for raw clock speed as a home theatre media centre. from what you guys are looking it the real benchmarks would be so friggen miinimal it be testing the difference between a 950 and 1000 hp cars that have milisecond differences on a race track.
August 23, 2010 10:43:13 PM

what wireless card are you using, if any?
September 17, 2010 8:22:00 PM

@jaredrutledge sorry for the late reply, but I don't use any wireless card.
Btw, now I'm really happy about my PC. It never crashed/frozen after my last reply.
Completely stable even though I overclocked to 2.94GHz.
!