My motherboard keeps changing PCI-E bus speed and it crashes

reyshan

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Dec 29, 2010
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Hi everyone, I have a GA-MA790X-DS4 motherboard with F10D bios and I am currently running a 960t cpu clocked @ 3.7 with northbridge clock @2.2 I have a MSI Twin Frozr III 6950 2gb unlocked to 6970 and clocked @ 900mhz core and 1325mhz memory. My problem is for the past 2 weeks now or so, my system would crash and sometimes recover and says that video card driver crashed and has recovered. I have reinstalled and reinstalled different drivers and even using driver sweeper each and every time but sometimes it still crashes. Every time it crashes it sometimes resets my pc or it recovers from the crash or just freezes up. When it recovers, my pci-e bus speed would change from 2.0 x16 to 2.0 x8 to even 1.0 x16. It constantly changes everytime it crashes. I also tried putting my northbridge on auto speed but it still crashes. It started crashing bad one day when my board wouldn't post and make a long beep sound followed by 2 short beeps. I looked in the manual and it says its either my video card or monitor. I took out my video card and it was still the same. I took my sisters video card and still same beeps. I inserted my sisters video card to the second x8 slot and my pc boots up. I took an air blower and blew on the slot and then i tried my video card and it booted up. But ever since then, my system would crash every now and then. Idk what to do. Does reformatting my pc would help? or buying a new board? I also put my video cards bios to stock and it was still crashing. I have a Seasonic 760xp power supply that is plenty enough to feed my pc. Also, this isn't my first time this has happend. When i got this board from swapping with my bro, the bus speed would show 1.1 x16 but then after a week it went back to the normal speed of 2.0 x16. Here is the link from Techpowerup about my question from them. http://www.techpowerup.com/forums/showthread.php?t=170005. Another thread I read here on Toms is about this other guy with an Asrock board: http://www.tomshardware.com/forum/351624-33-pcie-slot-running. So, any suggestions?
 

TenPc

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Jul 11, 2012
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It's nothing to do with the hard drive, it's the video card that seems to be the fault.

If your PSU is less than 800 watts then that could be your problem.

The video card Interface PCI Express x16 2.1
The motherboard slots •Dual PCI-E 2.0 x16 graphics interfaces with ATI
http://www.msi.com/product/vga/R6950-Twin-Frozr-III-Power-Edition.html#?div=Specification

http://www.gigabyte.com/products/product-page.aspx?pid=2695#ov

The video card is too advanced for your motherboard, perhaps.

Phenom II X4 960T is for the AM3 socket.
http://www.gigabyte.com/support-downloads/cpu-support-popup.aspx?pid=2695

1.4 x 1.8V DDR2 DIMM sockets for ram memory.
What is your ram? It should be about 8gb, your OS should be Windows 7 x64 or later, the video card is too advanced for your motherboard, it requires a 2.1 interface and his motherboard is only 2.0 x16 PCIe interface.

You are overclocking but for what purpose? The video card is as good as most any other so there is no real proper reason to be overclocking to get an extra 10 mhz or so.


Always give a detailed list of your OS and hardware, it might just be a mtter of incorrect ram , a poor performing PSU, or that you got a super dooper video card for an older version motherboard that may not support it.

Hopefully, there ar some real tech guys who know more than me about the need for overclocking but for now, you have to add more details about your system so that when they view this question, they will be able to add supportive arguments.
 

reyshan

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Dec 29, 2010
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Im not talking about my harddrive, im talking about my motherboard. I just got a 760w platinum from seasonic. I bought the best so i don't think i don't have any problems there. You should've read that even my sisters video card radeon 6450 didn't work either. I had to figure something out. my ram is 4gb running @ 1066 2.0v. I overclock because i want to. An extra boost does help. My OS is win 7x64. Go check my hardware information if you want to know more. I have been running this system for 2 years and only changed my psu back in january. Super dooper video card on a board that is 2.0 is sufficient enough. Do you even know the difference between 2.1 and 2.0? Because there isn't much difference and that isn't what my problem is.