Bad_pool_caller (c2)

By eckng
Nov 6, 2005
  1. Hi I just want to get a confrimation that the BSOD that i am getting is due to a faulty device driver. I've checked the ram with Mem test for 24 hours with no errors, did a dual instance of Prime 95 for 24 hours with no problems. Did a chkdsk no bad sectors nor problems.

    This happens when I play GuildWars in window mode and Mozilla Firefox is opened (at a flash heavy site).

    Here's a sample of my Debug.txt

    LAST_CONTROL_TRANSFER: from 8054a583 to 804f9c37
    b9c36850 8054a583 000000c2 00000007 00000cd4 nt!KeBugCheckEx+0x1b
    b9c368a0 bf802abb e2cfe150 00000000 b9c368c0 nt!ExFreePoolWithTag+0x2a3
    b9c368b0 bf8a1e24 e2cfe150 e2d277a8 b605030e win32k!HeavyFreePool+0xbb
    b9c368c0 bf9d6808 e2cfe160 e3321a78 e2f4f018 win32k!EngFreeMem+0x1c
    WARNING: Stack unwind information not available. Following frames may be wrong.
    b9c368c8 e3321a78 e2f4f018 e1863010 bf9d5fd1 nv4_disp+0x3808
    e2cfe160 00000000 001ff700 00000000 e2d277d0 0xe3321a78
    bf9d6808 ?? ???
    FOLLOWUP_NAME: MachineOwner
    SYMBOL_NAME: nv4_disp+3808
    MODULE_NAME: nv4_disp
    IMAGE_NAME: nv4_disp.dll
    FAILURE_BUCKET_ID: 0xc2_7_NV___nv4_disp+3808
    BUCKET_ID: 0xc2_7_NV___nv4_disp+3808

    I'm guessing it's the Nvidia video card drivers, (Beta 81.17) but using the (81.15) causes them as well, I havent tried to use the 70's series yet. But i'm not sure wether it's the video card driver OR is it firefox that causes the problem.

    I've attached the full debug.txt and minidump.

    Thank you for your help in advance!
  2. cpc2004

    cpc2004 TS Evangelist Posts: 1,994


    One minidump is insufficient to find out the culprit. Attach 5 to 6 minidumps here. The prelimary finding is faulty memory. Run memtest to stress test the ram.
  3. eckng

    eckng TS Rookie Topic Starter

    Yes I did a memtest for 24 hours with no errors and I swaped the slots as well. But I will try to get more minimaps. Thanks again for your advice
  4. eckng

    eckng TS Rookie Topic Starter

    I've got another 2 more minidumps which all point to the nv4_disp.dll.

    Note: This only happens when i play guildwars in a window mode with firefox 1.7 (with many flash heavy sites up).

    But if I play the game in fullscreen there's no crash (with firefox in the background). Also if I minise Guildwars, there's no crash as well. Only when these 2 are on screen then i'll get the flicker and bluescreen.

    Note:But using Guildwars in Window mode with IE (with even more flash heavy sites up) there's no crash nor blue screen.

    I checked my ram with memtest and again there were no errors, brought it to the shop to do a complete test no errors as well.

    I just need a confrimation that this version of the Nvidia drivers (81.17 & 81.15) have these kind of errors with an AMD X-2 3800.

    And to be double sure, I did a 2 X instances of prime 95 for 24hours with no problems.

    Attached below are the minidumps.

    Attached Files:

  5. cpc2004

    cpc2004 TS Evangelist Posts: 1,994


    The last two minidumps show that the culprit is nVidia Display card driver. Report the prooblem to nVidia Technical Support.
  6. eckng

    eckng TS Rookie Topic Starter

    Thanks man, but what about the first one? I Know it's not your fault as I only gave 1 minidump at that time, but does faulty memory causes that *.dll to crash? I just want to learn how you guys read the minidump so fast.
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