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eashleyfl
Journeyman III

Video shut-off new machine, 4 diff video cards...

Hi folks,

I'm building a new machine and it just doesn't want to cooperate. I've been building machines since the 80186 multi-user systems from Norstar days. I haven't built a new desktop in a few years though so I'm lost with some of the newer settings. Here's what I have

AMD FX8350 PIB (FD8350FRHKBOX)

ASUS MB5A97 LE R2.0 w/BIOS 2701

Corsair Vengeance 16GB RAM (CMZ16GX3M2A1866C9)

ASUS GEFORCE GTX750Ti (GTX750TI-OC-2GD5)

WD Blue 1 TB Drive (WD10JDVX)

Thermaltake SMART 700 P/S (PS-SPD-0700NPCWUS-W)

I also tried 2 new MSI AMD Radeon HD6450 (R6450-MD1GD3/LP) cards and someone's NVidia GeForce GTX215 that is known to work but doesn't have any branding on it. The system displays the same behavior with all 4 video cards. I went to this ASUS card since it has a seperate power connector to drive its fans but that had no impact. I sent the MB back to ASUS and they updated the BIOS and tested it, so it's known good. The CPU and memory are both on the QVL. When I boot the system, it will run for about 2 minutes while I'm configuring the BIOS (graphics mode) before the video shuts off. I think it is actually the CPU shutting off because before the BIOS update, all the chassis fans would shut off at the same time but with the 2701 BIOS the chassis fans keep running. I've set the BIOS to just optimized defaults, which is memory at 1333 MHz so that shouldn't be causing a problem. The BIOS reports a MB temp of 29ºC and a CPU temp of 41ºC. If I boot to a text mode Fedora Linux install, it will run for about 5 minutes before the shutoff occurs. There are no error messages displayed and no beeps from the MB, it just shuts off.

I'm sure this is going to be some BIOS setting, but it is frustrating because I don't really have time to find things in the graphical BIOS screen before the system shuts off. At that point, I'm allowed even less time before a shutoff because the system is already warmed up and have to give the machine time to cool before I try again. I installed 3 chassis fans in addition to the P/S, CPU and GPU fans. The chassis is reused but I cleaned it thoroughly before installing the components. All the current components expect the chassis and hard drive are new. The HD has less than 100 hrs. on it. I'm open to any suggestions and would appreciate if someone knows where I can find some screenshots of the ASUS BIOS to have a better idea of where I need to go for each setting I need to change.

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6 Replies

Re: Video shut-off new machine, 4 diff video cards...

Sounds like either a power supply issue, or there is a short somewhere. Take the motherboard out of the case and put it on a non-conductive surface, such as a cardboard box, and test it.

eashleyfl
Journeyman III

Re: Video shut-off new machine, 4 diff video cards...

That looks like it. Thanks. Odd that no one at ASUS or their forum suggested that. I'm guessing that the problem is coming from the alignment between the board and the change-out plate for the built in ports. Found it. This case came with some snap-on stand-offs rather than the kind that you insert a screw into. They are 3mm longer than a screw stand-off, so something would definitely touch along the ports or the underside of the slot bracket area. Thanks loads. I've been fighting this machine for over a month now. I'm running memtest86+ 5.01 now (still on the cardboard box) with the CPU ranging from 45º-56ºC.

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Re: Video shut-off new machine, 4 diff video cards...

56°C is a bit warm for that processor on an open bench even with the stock HSF. amdmatt​ do you agree?

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techguy
Forerunner

Re: Video shut-off new machine, 4 diff video cards...

Be sure that the CPU temp that you are reading is the internal (core temp), not the "CPU" temp that is often the CPU socket temp, not the internal CPU core temp. Applets such as Aido64, HWiNFO and Core Temp provide pretty accurate FX temps in the 60C-70C range. The CPU socket temp can run 10C-25C higher than the CPU internal temp depending on load and duration.

The max user temp (internal core temp), for the 125w FX-8000 series CPUs is 61C. You should have no issue keeping the CPU below 61C under full load with the OE HSF. Make sure that you set the fans speed option in the BIOS or O/S to 100% or "full speed" so the fans can run at the appropriate speed for proper cooling.

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eashleyfl
Journeyman III

Re: Video shut-off new machine, 4 diff video cards...

The temp was what memtest86+ was reporting. It was only that high for about a minute running a test on all cores at once. Mostly it was high 40's. Thanks for the extra info.

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Re: Video shut-off new machine, 4 diff video cards...

You're good then.

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