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Windows 7: Win7 Pro x64 IPBusEnum Locks System

26 Oct 2009   #11

Win7 x64 Pro

That is the post i referred to in my original post, I guess I am not doing something right as I couldn't change the permissions. But I may not care anymore as I decided to drop my memory speed down to 1333 to see how that would run. I know my board can handle the 1600 but it seems like it wasn't working with the processor very well because now everything seems to be running smoothly. Prime95 runs great and WLM and STEAM don't lock up anymore either. Obviously I would like to run the memory at it capable speeds but I would much rather have a stable system. If I knew anything about OCing a processor I may try that in combination with other memory timings down the road to see if i can run my sticks at 1600mhz without a compromise in stability. For now I am going to consider my problems with freezing solved. But the IPBusEnum issue still pops up here and there, but it isn't follow up by a system lockup anymore!
Conradhedberg, thanks for taking the time to talk this through and bounce around ideas. Maybe i will try changing permissions again on that key again, but i wasn't having any luck the last time.

Well everything seems to be running great except for when I actually try to play a game. Sometime after starting up a game my system seems to go wrong somewhere. My display will just go black and my monitor will tell me No Signal but i can still hear the music playing (although one time the music was messed up.) No matter what keys I hit the display does not show anything. I installed a few GPU benchmark programs, the most popular being Furmark and the card does not quit during these programs. It warms up to 73C but it displays just fine. Why can't this ever just be easy?

My System SpecsSystem Spec
27 Oct 2009   #12

Windows 7 Professional 64 bit

I have 1600 sticks also, but I don't run them that high. There were many issues with getting the exact settings between the core and the memory. I spent many hours with Corsair trying to get the settings correct with the Intel core. Intel does not provide real support for OCing so that was a dead end even though that board and core can be tweeked.

The actual difference between 1333 and 1600 is minimal.

As far as your monitor it sounds like power settings has it shutting off at some point. Start with Power options in the monitor sections.

Good luck!
My System SpecsSystem Spec
27 Oct 2009   #13

Win7 x64 Pro

That was my first thought as well. Thought maybe Windows wasn't recognizing my activity while playing a game and decided to turn the monitor off or something screwy like that, so i disabled any power saving features and tried again. I got the same results time after time. The only thing that changed was how long it took, it just seems to be very random. I called my card manufacturer and they suggested some IRQ changes which can't be done and after several other verifications they suggested that i return the card for a new one. Since it is only a couple weeks old I will return it and see if a new one works. But after doing some research it seems like I am not the only one with this problem. I also jumped in on the following thread in the NVidia forums to see if they could help and they just verified that others seem to have the issue as well: Hardware Problem or Driver Crashing - NVIDIA Forums
My System SpecsSystem Spec

29 Oct 2009   #14

Win7 x64 Pro

For anyone that may be following the thread, I was able to exchange my card for a new card yesterday. The store no longer had my exact card in stock so i got another GTS 250 from a different manufacturer. This card seems to be working for my system. I played Empire Total War for a few hours last night and I didn't get a No Signal. Anyways, I no longer have any system lockups, freezes or anything of the sort and hopefully it will stay that way.
My System SpecsSystem Spec

 Win7 Pro x64 IPBusEnum Locks System

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