ATI HD 6990 completely shuts down pc during gaming

[hobbert]

While playing certain games, mostly those graphic intensive, my PC will just shut off and restart. It does not ever happen unless I am gaming.

There are some games where it is random (graphics overdrive is on simply for fan speed control, so it's not overheating) and one game (Diablo 3) where it shuts off at the exact same place every time. This has obviously been my testing spot to see if anything I've done has fixed the problem but to no avail.

My power supply is 1200W, so plenty there, although I guess it could be a problem if it's trying to pull power from it to the 2nd GPU which is when it restarts. I am by no means an expert, but not completely inept. I did build the rig myself a few years back and am hoping that it's the power supply being funky and not the (much more) expensive graphics card.

Operating System: Windows 7 Ultimate N 64-bit (6.1, Build 7601) Service Pack 1
Processor: Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz (8 CPUs), ~2.7GHz
Memory: 6144MB RAM
Card name: AMD Radeon HD 6900 Series
Manufacturer: Advanced Micro Devices, Inc.
Chip type: AMD Radeon Graphics Processor (0x671D)
DAC type: Internal DAC(400MHz)
Device Key: Enum\PCI\VEN_1002&DEV_671D&SUBSYS_0B2A1002&REV_00
Display Memory: 2783 MB
Dedicated Memory: 4068 MB

I have the latest drivers but have tried reverting back to older drivers, uninstalling and reinstalling the new ones, etc. The screen doesn't just go black which normally would tell me it's a graphics card problem, it just randomly restarts on 95% of the "problem" games as I call them.

Any help would be greatly appreciated!

 

[swifty_morgan]

pull the card apart. thoroughly clean ( heat sink fins..... and processor paste......... reapply new...... reassemble. what happens?

are the games patched?

overly big power supply may not be working to top efficiency. sounds odd>>??

when is the last time you pulled the cpu heat sink and cleaned up the thermal paste/reapplied/reassembled?

( don't lose any of the thermal pads on the card.......... ) the crossfire bridge on the card gets hot....... that's why I say to disassemble.

 

[hobbert]

pull the card apart. thoroughly clean ( heat sink fins..... and processor paste......... reapply new...... reassemble. what happens?

are the games patched?

overly big power supply may not be working to top efficiency. sounds odd>>??

when is the last time you pulled the cpu heat sink and cleaned up the thermal paste/reapplied/reassembled?

( don't lose any of the thermal pads on the card.......... ) the crossfire bridge on the card gets hot....... that's why I say to disassemble.

I was wrong about the PSU, I forgot that my 1200W was faulty and replaced with an 850W.

Everything is clean, paste reapplied recently. Just took the card apart again and checked and it's still looking good.

Still confused though as to why one game it crashes at the exact same spot and others it is completely random. Frustrating.

 

[swifty_morgan]

is it still doing it?....... did you try an uninstall/reinstall/or maybe a repair install?if the option is there.......... might be missing a dll file/something in the scripting that got deleted somehow.

 

[hobbert]

is it still doing it?....... did you try an uninstall/reinstall/or maybe a repair install?if the option is there.......... might be missing a dll file/something in the scripting that got deleted somehow.

Yep it's still crashing at that same spot. I'll try uninstalling/reinstalling but that still won't help the other games where it powers down at random. Could it be the PSU causing problems in the others?

 

[swifty_morgan]

set time zone to croatia..................... what motherboard do you have? did you try cmos reset?.......... when is the last time you did a bios update? cpu was also redone?

 

[hobbert]

Okay I haven't tried any of that yet but I do have an update that may or may not help. After having this crash on me probably 25 times (no joke) I gave that area of Diablo that crashes a go in windowed mode and instead of crashing after 2 seconds it made it all the way through.

No idea if that gives any help or not but that's puzzling.

 

[swifty_morgan]

being in widowed mode means it's running at lower resolution. whatever your monitor res is ( 1080p )?................ lower it....... ( 720P )?.whatever a lower res is that the monitor supports........... give it a go.