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Thread: P31-DS3L CPU ratio stuck. Help!




  1. #1
    Join Date
    Nov 2008
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    Unhappy P31-DS3L CPU ratio stuck. Help!

    Hello, first post here. OK, so I built myself a new PC 6 months ago now and all was fine up untill around 2 months ago. Basically the CPU multiplier in the P31 bios is stuck at 6. It absolutely will not budge from 6. I'm running an Intel E6850 which should be running at 3ghz but instead is running at 2. As i said earlier the PC was running fine at 3ghz for all of 4 months but recently it's been driving me insane.
    All other BIOS settings save when I change them, except for the CPU ratio. I set it to 9, which is what the CPU should be running at, save the BIOS, it restarts and when I go back into BIOS it's back at 6.
    I've searched for the solution everywhere. Reset the CMOS, flashed the BIOS, disabled Intel Speedstep, disabled USB Legacy support, re-seated the CPU and it just will not run at anything other than 2ghz with a 6x multiplier.
    Could my voltages be wrong? If so why did it run at 3ghz without any voltage tweaking what so ever for 4 months? Basically I'm out of ideas and would appriciate any advice anybody can give me.

    Thanks.

    Specs:
    P31 DS3L (Bios V 10a)
    C2D E6850
    Akasa 450W PSU
    x1900XT
    2GB Corsair XMS

  2. #2
    Join Date
    Apr 2008
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    942

    Default Re: P31-DS3L CPU ratio stuck. Help!

    Quote Originally Posted by SWOOORDs View Post
    Hello, first post here. OK, so I built myself a new PC 6 months ago now and all was fine up untill around 2 months ago. Basically the CPU multiplier in the P31 bios is stuck at 6. It absolutely will not budge from 6. I'm running an Intel E6850 which should be running at 3ghz but instead is running at 2. As i said earlier the PC was running fine at 3ghz for all of 4 months but recently it's been driving me insane.
    All other BIOS settings save when I change them, except for the CPU ratio. I set it to 9, which is what the CPU should be running at, save the BIOS, it restarts and when I go back into BIOS it's back at 6.
    I've searched for the solution everywhere. Reset the CMOS, flashed the BIOS, disabled Intel Speedstep, disabled USB Legacy support, re-seated the CPU and it just will not run at anything other than 2ghz with a 6x multiplier.
    Could my voltages be wrong? If so why did it run at 3ghz without any voltage tweaking what so ever for 4 months? Basically I'm out of ideas and would appriciate any advice anybody can give me.

    Thanks.

    Specs:
    P31 DS3L (Bios V 10a)
    C2D E6850
    Akasa 450W PSU
    x1900XT
    2GB Corsair XMS
    I see you are using a Beta bios. Has the CPU run at 3Ghz with this particular bios?
    Also when the PC boots onto the very first startup screen, does that indicate you are now running at 333x6?
    GA-P35C-DS3R Rev2.0 F11 bios, E8200 (@3.0Ghz), OCZ DDR3 PC3-10666 Reaper 4GB (@1200Mhz), Xonar D1, 8800GTS 512, Corsair HX520 (Single 12volt line, Max 40A), WDC 3200aaks/5000aaks in AHCI mode, Vista 64 Premium.

  3. #3
    Join Date
    Nov 2008
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    Default Re: P31-DS3L CPU ratio stuck. Help!

    I see you are using a Beta bios. Has the CPU run at 3Ghz with this particular bios?
    Also when the PC boots onto the very first startup screen, does that indicate you are now running at 333x6?
    You know what, I can't remember. But I did roll it back to 9 and back again to 8. It's the same problem on every BIOS version I've tried. Yes, after I've tried to change the multiplier to 9, I save it and after the restart the startup screen says it's reverted back to 6.

  4. #4
    Join Date
    Apr 2008
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    942

    Default Re: P31-DS3L CPU ratio stuck. Help!

    Are you loading up the optimised bios defaults after flashing the bios, saving then rebooting, before you set anything?
    GA-P35C-DS3R Rev2.0 F11 bios, E8200 (@3.0Ghz), OCZ DDR3 PC3-10666 Reaper 4GB (@1200Mhz), Xonar D1, 8800GTS 512, Corsair HX520 (Single 12volt line, Max 40A), WDC 3200aaks/5000aaks in AHCI mode, Vista 64 Premium.

  5. #5
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    Nov 2008
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    Default Re: P31-DS3L CPU ratio stuck. Help!

    Yes, I'm loading the BIOS correctly each time. It's got me completely stumped. Bad Mobo or CPU? Temps are fine, CPU idle at about 28 degrees. I'm at a loss.

  6. #6
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    Apr 2008
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    Default Re: P31-DS3L CPU ratio stuck. Help!

    So if you flash the bios, reboot, loadup optimised bios defaults, save, reboot that the multiplier is shown on the bios reporting startup screen (not in the bios) as 6 x 333 ?Has your latest bios got the CPU multiplier Fine adjustment ie 0.5x multiplier?

    It's almost as though the bios has either become corrupted or a register/value is not resetting.
    When you reset the Cmos, did you also remove the battery?
    Last edited by VorLonUK; 11-04-2008 at 11:37 PM.
    GA-P35C-DS3R Rev2.0 F11 bios, E8200 (@3.0Ghz), OCZ DDR3 PC3-10666 Reaper 4GB (@1200Mhz), Xonar D1, 8800GTS 512, Corsair HX520 (Single 12volt line, Max 40A), WDC 3200aaks/5000aaks in AHCI mode, Vista 64 Premium.

  7. #7
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    Nov 2008
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    Default Re: P31-DS3L CPU ratio stuck. Help!

    Quote Originally Posted by VorLonUK View Post
    So if you flash the bios, reboot, loadup optimised bios defaults, save, reboot that the multiplier is shown on the bios reporting startup screen (not in the bios) as 6 x 333 ?Has your latest bios got the CPU multiplier Fine adjustment ie 0.5x multiplier?

    It's almost as though the bios has either become corrupted or a register/value is not resetting.
    When you reset the Cmos, did you also remove the battery?
    Yes, I flash and loadup optimized defaults, which puts the multiplier to 9x333, save then restart and straight away on the startup screen it displays the multiplier as having gone back to 6.
    The BIOS dosn't seem to have the fine adjustment setting, can't see it anywhere. I took the CMOS battery out today and left it for an hour or so but have the same problem.

    It's very strange that all other BIOS settings save without a hitch, it's just the multiplier. I don't understand it at all.

  8. #8
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    Apr 2008
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    Default Re: P31-DS3L CPU ratio stuck. Help!

    Although mine shows the minimum and maximum multiplier for when Eist is enabled, it will save the highest multiplier and boot accordingly.

    Just a long shot as I don't know your board, try disabling C1 and EIST in the bios.
    GA-P35C-DS3R Rev2.0 F11 bios, E8200 (@3.0Ghz), OCZ DDR3 PC3-10666 Reaper 4GB (@1200Mhz), Xonar D1, 8800GTS 512, Corsair HX520 (Single 12volt line, Max 40A), WDC 3200aaks/5000aaks in AHCI mode, Vista 64 Premium.

  9. #9
    Join Date
    Nov 2008
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    Default Re: P31-DS3L CPU ratio stuck. Help!

    Disabling C1 and EIST was one of the first things I did when the problem first started. Seems it isn't a Speedstep issue at all. Thanks for the suggestions though. Possibly is a corrupt BIOS but why would it save all other settings except the multiplier? It's a very strange problem.

  10. #10
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    Default Re: P31-DS3L CPU ratio stuck. Help!

    I've almost run out of ideas, hopefully Lsdme (the forum mod) might be able to shed some more light on the problem.

    Out of interest, on your bios do you enter a decimal number for the multiplier, between 6 & 9? What happens if you say set 6, 7 or 8 manually. I'm assuming 6 will stay as 6, but its worth trying a 7x and 8x multiplier.
    GA-P35C-DS3R Rev2.0 F11 bios, E8200 (@3.0Ghz), OCZ DDR3 PC3-10666 Reaper 4GB (@1200Mhz), Xonar D1, 8800GTS 512, Corsair HX520 (Single 12volt line, Max 40A), WDC 3200aaks/5000aaks in AHCI mode, Vista 64 Premium.

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