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280X's crashing and lines on the screen

post #1 of 2
Thread Starter 
Hey guys.
So i recently helped my brother upgrade his PC and all has been well for about 3 months when things started going downhill.

Specs :
17 3820
Intel DX79TO
4x4GB Kingston Hyper-X DDR3 1600 RAM
250GB Intel SSD (cant remmeber the model)
Some other HDD's
2 x Gigabyte R9 280X
850W PSU (Also cant remember brand) single rail but he has to use 2xMolex to 6 pins for card 2 (far from ideal and against my suggestion but oh well)
Windows 10

The Issue :
Recently his PC would crash randomly, 15% of the time with a BSOD reporting the ati driver.

The following happens when using just 1 card :
Card 1
Often before even entering Windows. You will however see the BIOS screen 90% of the time. When you do see the BIOS screen, you can see faint horizontal lines with the one card. Then when in windows, it would randomly crash and he will receive the error of CCC could not start because there is no devices compatible..Ie drivers are not being loaded correctly or the card is not being detected correctly.
Card 2
Screen goes grey and does not recover. Sometimes you get a BSOD after a few minutes.

Things we have tried :
Firstly, we tried using Drive sweeper and reinstalled drivers (14.12). No change. PC crashes with card 1 and screen goes grey with card 2.
Then we reran Drive sweeper and tried the latest full release(15.7.1). Same as above
Still to try : 15.9 with both cards
We have tried all combinations of his cards.
Also need to try using another card to test with.

Reinstalled windows(clean install) and repeated above : No improvement
To still try : Install windows 8.1 and see if its a Windows 10 thing.

Swap RAM and retry in all configuration : No real change. Seemed a bit better on 8GB but not huge.
Still need to run MemTest

Tried a HDMI cable instead of the DVI cable. Would not detect screen output on the one card we tested with. Need to test with card 2.

When in single card mode, we swapped power cables powering the GPU and removed the Molex to 6 pin bridge incase those were shorting somewhere.
Checked all temps and everything is fine.

Did a Mobo BIOS reflash (he was already on the latest version).
Tried the GPUs in different PCI slots and even dusted the slots and the card incase dust was disrupting the connection.

Theories :

RAM seems fine. Not impossible but im calling a not likely here.
GPUs ; Maybe the one is not happy? but there is definately something else here. What are the chances of 2 cards going south at the same time??? not likely .
PSU : All voltages in HwMonitor dont look to far off. Also Pc runs when both cards are in just as it does with one (get into windows occasionally) no reall gaming or anything though to really push the PSU since this started but it is the one sub/par component in his build and where he stays the electricity is not the smoothest.
DVI Cable : Can cause the lines on the screen. He is going to get a friends cable to test with.
OS/Driver combo : With Win10 anything is possible biggrin.gifbiggrin.gif Installing Win8.1 will answer this
CPU : No clue. Seems to run well though and temps are all good.
Mobo : Could be. Ive already had a friends Intel DX79SI die so not impossible.








Thank you very much for any ideas/insights etc to sorting this out as its as frustrating as anything.
   
Cores Galore
(16 items)
 
CPUGraphicsGraphicsRAM
i7-6700HQ GTX 1070 8GB RX Vega 64 Via Alienware AMP 16GB 2667mhz Alienware 
Hard DriveHard DriveMonitorMonitor
Crucial BX100 1TB Samsung 960 Pro 512GB Acer XR341CK 34" 3440x1440 @ 85hz awesomness Stock 1920x1080 
KeyboardMouseMouse PadAudio
Logitech G410 Atlas Spectrum Logitech G700S Roccat Taito Logitech G930 
CPUMotherboardGraphicsHard Drive
i7-4700QM Alienware M14X Nvidia Geforce GTX 765M Samsung Evo 850 mSATA 256 GB 
Hard DriveOSMonitorMonitor
Crucial BX100 1TB Windows 10 Acer XR341CK Stock 14" 1920x1080 IPS 
KeyboardPowerMouseMouse Pad
Logitech G410 Atlas Spectrum Stock Alienware 180W Logitech G700S Roccat MTW 
AudioAudio
Logitech G930 Audio Technica ATH-M50X 
CPUMotherboardGraphicsRAM
I7 3960X Rampage IV Extreme Black Edition MSI R9 390X Gaming 32GB Corsair Vengence 
Hard DriveHard DriveCoolingOS
Crucial MX200 240GB 1TB Crucial BX100 Custom WC Loop Windows 10 
MonitorMonitorKeyboardPower
Acer P243W Acer P243W Logitech G510S Corsair AX850 
CaseMouseMouse PadAudio
None rght now Logitech G500S Roccat Taito MTW Logitech G930 
  hide details  
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Cores Galore
(16 items)
 
CPUGraphicsGraphicsRAM
i7-6700HQ GTX 1070 8GB RX Vega 64 Via Alienware AMP 16GB 2667mhz Alienware 
Hard DriveHard DriveMonitorMonitor
Crucial BX100 1TB Samsung 960 Pro 512GB Acer XR341CK 34" 3440x1440 @ 85hz awesomness Stock 1920x1080 
KeyboardMouseMouse PadAudio
Logitech G410 Atlas Spectrum Logitech G700S Roccat Taito Logitech G930 
CPUMotherboardGraphicsHard Drive
i7-4700QM Alienware M14X Nvidia Geforce GTX 765M Samsung Evo 850 mSATA 256 GB 
Hard DriveOSMonitorMonitor
Crucial BX100 1TB Windows 10 Acer XR341CK Stock 14" 1920x1080 IPS 
KeyboardPowerMouseMouse Pad
Logitech G410 Atlas Spectrum Stock Alienware 180W Logitech G700S Roccat MTW 
AudioAudio
Logitech G930 Audio Technica ATH-M50X 
CPUMotherboardGraphicsRAM
I7 3960X Rampage IV Extreme Black Edition MSI R9 390X Gaming 32GB Corsair Vengence 
Hard DriveHard DriveCoolingOS
Crucial MX200 240GB 1TB Crucial BX100 Custom WC Loop Windows 10 
MonitorMonitorKeyboardPower
Acer P243W Acer P243W Logitech G510S Corsair AX850 
CaseMouseMouse PadAudio
None rght now Logitech G500S Roccat Taito MTW Logitech G930 
  hide details  
Reply
post #2 of 2
You should try the cards in a second machine just to narrow it down to them or other issues on the computer itself.
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