Problems with Prime95 28.9 on my old Phenom II x6 System
 

Hi, I have a system as follows:

CPU Phenom x6 1100t w/Arctic Cooling Freezer 7 Pro Rev. 2
RAM Crucial Ballistix Tracer LED DDR3-1866 2x4GB
MOBO Gigabyte ma790xt-ud4p
GPU MSI Radeon R9 390 Twin Frozr LE 8GB
HARDDRIVE Mushkin 60 gig SSD
HARDDRIVE #2 Western Digital Blue 1TB 7200 RPM
DVD Pioneer DVD+/-RW Drive
POWER SUPPLY EVGA 750 Watt Semi-modular Power
EXT Anker 2+2 port USB 3.0 Card
OS Windows 10 Home Premium

I have tested it for stability like crazy with prime95 28.7 and 3dmark, etc. and it seems to work fine. However, whenever I run prime95 28.9, i get (formerly a blue screen screen and reboot) when I had my graphics card in the 2ndary pci slot and using a different SATA controller, and now an error messaged saying prime95 has failed (or something like that). The system appears to be stable otherwise, but I cannot get it to run prime95 28.9.

Does it fail straight away upon opening it, or after running for a while? If it's after a while, is it always a similar length of time or completely random?

[QUOTE=Rhanceed;434848]Hi, I have a system as follows:

CPU Phenom x6 1100t w/Arctic Cooling Freezer 7 Pro Rev. 2
RAM Crucial Ballistix Tracer LED DDR3-1866 2x4GB
MOBO Gigabyte ma790xt-ud4p
GPU MSI Radeon R9 390 Twin Frozr LE 8GB
HARDDRIVE Mushkin 60 gig SSD
HARDDRIVE #2 Western Digital Blue 1TB 7200 RPM
DVD Pioneer DVD+/-RW Drive
POWER SUPPLY EVGA 750 Watt Semi-modular Power
EXT Anker 2+2 port USB 3.0 Card
OS Windows 10 Home Premium

I have tested it for stability like crazy with prime95 28.7 and 3dmark, etc. and it seems to work fine. However, whenever I run prime95 28.9, i get (formerly a blue screen screen and reboot) when I had my graphics card in the 2ndary pci slot and using a different SATA controller, and now an error messaged saying prime95 has failed (or something like that). The system appears to be stable otherwise, but I cannot get it to run prime95 28.9.[/QUOTE]
In most cases "blue screen" told you what is wrong. If you see "ati" or "nvidia" files caused problem I can bet it is graphic card.
For testing graphics card I recommended Furmark, if passed Furmark without any error that graphics is OK, but I think card will fail!
But also can be MB, and that will be harder to detect
First test graphic card with Furmark ( hardest test)

Oh, thanks for the replies.

It fails after a variable length of time. Usually within a couple hours. i've got it to the point of failing innocently enough now, by dissapearing from the taskbar without a trace or by giving me an error message that prime95 has crashed. i can't remember what the bluescreens were, i think there were several with completely different messages.

I'll try furmark and get back to you.

I can't see the last post I made, so I guess I'll just post again.

It seems to fail anywhere from minutes to the 2 hour range. It fails with either dissapearing from the taskbar and no message at all, to closing down with the error message I spoke of before.

I tried running furmark for a half hour and everything seemed OK.

[QUOTE=Rhanceed;435103]Oh, thanks for the replies.

It fails after a variable length of time. Usually within a couple hours. i've got it to the point of failing innocently enough now, by dissapearing from the taskbar without a trace or by giving me an error message that prime95 has crashed. i can't remember what the bluescreens were, i think there were several with completely different messages.

I'll try furmark and get back to you.[/QUOTE]
I dont know is Win 10 has Event Viewer, but if have it, it must be written time and reason why Prime95 stop working. Since Furmark for 30 minutes didnot show any error ( I hope you tested at hardest level as I say) then it must be or CPU or memory. Hardly it is MB since if MB fail it is likely that will also GPU fail or such intensive test.
Test memory with latest version of Memtest86+.
Always can download Linux and try it under Linux, to see how it works under other OS.

[QUOTE]and now an error messaged saying prime95 has failed (or something like that)[/QUOTE]
Copy that message here

Hey, what is your CPU-Clock ? Maybe also VCore too little or RAM error. Try only 1 module. Also you can try only 2.8 GHz or 3 GHz !?

Hi, my cpu clock is at 3.3 ghz. Currently testing at stock voltage instead of undervolted.

I realized my ram was running too tight timings. 9-9-9-24 @ 1600 instead of 9-9-9-27 @ 1600. The ram is rated at 9-9-9-27 @ 1866, so I'm suprised that it wouldn't take the 9-9-9-24 setting. Anyways, that seemed to help a lot. I managed to run the test overnight, however, it did fail in the morning.

Lower your memory speed and try again

Tested memory overnight with Memtest86 at 1600 @ 9-9-9-27, and it passed.

However, prime95 still failed. I tried lowering the memory to 1333, so the memory controllers not overclocked (good idea btw), however prime95 still failed.

I tried flashing to the latest beta bios and lowering the cpu speed to 2.8ghz @ stock voltage, but prime still failed.

Here are some pics of the error messages.

Only thing I haven't tried yet is 1 ram module. I'll get back to you once I do that.

So it looks like your computer works OK, and pass all tests individually when is in no "stress mode" , or in other words when Prime95 is not running.
Then power consumption is low and all works well.
Once you eliminate the impossible, whatever remains, no matter how improbable, must be the truth
Your CPU or MB is defective. And there is no easy way to proof what is faulty part :(
[URL="http://www.brainyquote.com/quotes/quotes/a/arthurcona134512.html"][/URL]