Ongoing intermittent crash

Hi all,

Been fighting this problem for about a year on and off, my system will simply shut down and reboot from time to time almost always when running full screen graphics (FSX, Movies etc.)

Spec is as follows:

Intel DX48BT2 Motherboard
4GB DDR3 Corsair Ram (Dual, Symmetric)
Intel E8600 Core 2 Duo
NVIDIA GeForce 9600GT w/ 1024MBytes
Dual Monitors DELL E248WFP (Digital) 1920x1024 and Acer G195HQ (Analog) (extended mode)
Earthwatt 650W PSU
Operating System Windows7 64bit
Two Harddrives Western Digital SATA 500GB and 250GB

I have all the latest BIOS, video and chipset drivers (I think)
My first thought was the graphics card, swapped that out - no change
Turning off the second monitor makes no difference.
I recently "borrowed" another CPU from work - no change.

I am not an overclocker, BIOS settings are "optimal defaults" when its working it runs fast enough running FSX.
I have run several diagnostics including the Intel Desktop Control center temps and voltages appear OK.

I am testing with OCCT but nothing conclusive so far.

Is it likely there's a problem with the motherboard? The Intel CPU heatsink is the older type (push/turn) and was I suspicious that it wasn't making good contact - it definitely is now but the problem persists.

My other thought was the Power Supply but I think the Earthwatt 650 should be OK?

If anybody has any thoughts I would be grateful!

Thanks

Geoff
14 answers Last reply
More about ongoing intermittent crash
  1. What are your temps? Check with Core-temps and GPU-Z.

    Though it could be PSU, if your having problems ever since a year ago, you might have got a faulty unit.

    Try also running Memtest and see if its a RAM issue. (unlikely)
  2. Temps all seem OK - CPU lowest 37C High (during FSX session) 72C both cores
    GPU reports 60min and 64max. I am going try and "borrow" a Motherboard ;-)
  3. usually its the motherboard when it does these wierd reboots or shudowns during games etc. Also try reseating the ram sometimes that can help good luck.
  4. Have you considered replacing your (old) Power Suppy Unit?

    Replacing the motherboard is a massive nightmare, especially if the chipset(s) are slightly different. (It'll cause all kinds of problems).
  5. Have you reset/cleared your CMOS sometimes it can become corrupted over time.
  6. Scott2010au said:
    Have you considered replacing your (old) Power Suppy Unit?

    Replacing the motherboard is a massive nightmare, especially if the chipset(s) are slightly different. (It'll cause all kinds of problems).


    Yeah right - thats why I was a reluctant to go that way - if I do I will probably upgrade everything (Motherboard and CPU) then re-install Windows...

    Maybe swapping the PSU is the next thing to try...
  7. davcon said:
    Have you reset/cleared your CMOS sometimes it can become corrupted over time.


    Hmm - I haven't done that from the link on the motherboard, will give it a try - thanks!
  8. Doom3klr said:
    usually its the motherboard when it does these wierd reboots or shudowns during games etc. Also try reseating the ram sometimes that can help good luck.


    I had the RAM out a while back - tried running with one stick - didn't help - but thanks!
  9. The solution seems to be talk to few folk on Toms Hardware! Its been good for about a week now. When I finally change something that fixes the problem permanently I will post again,

    Thanks to all

    Geoff
  10. Hi and thanks for looking, as I said it been OK for about a week now (crashed once last Saturday)

    Here's CPUZ readout:

    DIMM # 1
    SMBus address 0x50
    Memory type DDR3
    Module format UDIMM
    Manufacturer (ID) Corsair (7F7F9E0000000000)
    Size 2048 MBytes
    Max bandwidth PC3-8500F (533 MHz)
    Part number CM3X2G1333C9DHX
    Number of banks 8
    Nominal Voltage 1.50 Volts
    EPP no
    XMP no
    JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
    JEDEC #1 6.0-6-6-18-24 @ 457 MHz
    JEDEC #2 7.0-7-7-20-27 @ 533 MHz
    JEDEC #3 8.0-8-8-23-31 @ 609 MHz
    JEDEC #4 9.0-9-9-26-35 @ 685 MHz

    DIMM # 2
    SMBus address 0x52
    Memory type DDR3
    Module format UDIMM
    Manufacturer (ID) Corsair (7F7F9E0000000000)
    Size 2048 MBytes
    Max bandwidth PC3-8500F (533 MHz)
    Part number CM3X2G1333C9DHX
    Number of banks 8
    Nominal Voltage 1.50 Volts
    EPP no
    XMP no
    JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
    JEDEC #1 6.0-6-6-18-24 @ 457 MHz
    JEDEC #2 7.0-7-7-20-27 @ 533 MHz
    JEDEC #3 8.0-8-8-23-31 @ 609 MHz
    JEDEC #4 9.0-9-9-26-35 @ 685 MHz

    I can send the whole text file if it helps,

    Geoff
  11. OK well here's what I did:

    1. Ran the built-in Windows 7 Mem Diagnostic, it ran and reported no errors but I wasn't convinced - it was supposed to give a report when Windows re-started and it didn't.
    2. Downloaded WMD it gave a message that my system had more than 4GB of memory (?) and that he results would not be reliable - but it ran overnight (116 passes) and seemed OK.
    3. Downloaded Memtest86 v3.5. v3.5 would not run - the system crashed halfway through the first test, but v3.4 was fine - ran several complete passes.
    4. Downloaded Memtest86+ v4.1 - it seemed to detect everything correctly and ran one pass without problem. I am going to let that run overnight tonight.

    One thing more, it seems that this problem can occur at any time when running any application but it is much more likely to happen when running full-screen video on the larger (1920 x 1200) monitor.

    Geoff
  12. Well now,

    The main hard-drive just failed - I had noticed that things were getting a little slow, looking back in the event viewer there had been occasional "Bad Block" messages going back several months until the other night when I suddenly realized things were getting really bad, rushed out bought a replacement, cloned it (with a few errors) and am now back running again.

    Credit to Windows7 to live with the problem for so long and to keep going albeit very slowly, also the very good software that came with the Seagate replacement - very easy to use, ran a full disc repair and so far everything is cool, and surprisingly fast!

    But you have to wonder if some slightly more obvious message would be a good idea? I mean if the drive is failing its unlikely to get better all by itself I think a warning like "Your drive is failing replace it soon" would have gotten my attention sooner.

    The question is - could this be the cause of the original problem?

    Watch this space...

    Geoff
  13. Its been OK for over a week, then yesterday watching a movie (after about 45mins!) same thing...

    So - its not:

    The harddrive, the graphics card or the CPU, (have exchanged each of those and at some point had the same problem)

    Which leaves the memory or the mother board I guess. Next thing is to remove one of the 2GB memory sticks.

    Unless someone has any other ideas?

    Wierd...

    Geoff
  14. So I have now run every combination of single 2GB memory stick for an extended period, one stick, then the other, then in a different slot etc etc.

    Bottom line:

    It never crashes with a single stick of memory, as soon as I put 2 x 2GB of RAM it will eventually crash - almost always when playing full screen video, so its not a bad memory stick and its not a bad memory slot.

    Is it possible that this motherboard doesn't really support 4GB of RAM with a 64bit operation system? (I never had any problems under 32bit XP)

    In a desperate attempt to get the system a bit more reliable, and since the problem does seem to be memory-related I am going to try tweaking the memory timings, I have never attempted this and would certainly appreciate any advice...

    All I have done initially is to increase everything by 1 (so 7,7,7,20 is now 8,8,8,21) - so far nothing bad has happened.

    Geoff
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