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Thread: Blank screen after EF firmware change to hybrid




  1. #1
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    Default Blank screen after EF firmware change to hybrid

    I tried to unlock one core in my Phenom on GA-MA790X-UD4 motherboard.
    I succesfully upgraded EC Firmware in BIOS (to hybrid), saved presets, then reeboted, and monitor is completely blank, no post screen, etc. CD-ROM seems to work, hard drive speeds up, fans are on. No beeps from motherboard. Any ideas?

    Manipulating graphics card, memory, doesn't help. Cmos already has been cleared.

  2. #2
    Lsdmeasap's Avatar
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    Default Re: Blank screen after EF firmware change to hybrid

    Sounds like your CPU didn't like that too much.

    How long, and how, are you clearing the CMOS? I suggest you try the long method posted in reply 2 here
    http://forums.tweaktown.com/f69/bios...h-guide-27576/

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    Default Re: Blank screen after EF firmware change to hybrid

    Quote Originally Posted by Lsdmeasap View Post
    Sounds like your CPU didn't like that too much.

    How long, and how, are you clearing the CMOS? I suggest you try the long method posted in reply 2 here
    http://forums.tweaktown.com/f69/bios...h-guide-27576/
    I removed battery for the whole night yesterday. Power cable was unpluged. But I didn't short pins before night. Didn't help.
    Now I'm trying to use flashing in 'silent' mode. CD-ROM seems to work, it try to read something from CD.

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    Default Re: Blank screen after EF firmware change to hybrid

    Ahh, well battery overnight should have done the trick.

    Try removing all hard drives and put your CD into the first SATA Slot, then put in the motherboard cd and see if it will flash that BIOS. I don't think any of this will help since you are not getting a bad flash screen, but it might.

    Do you have another CPU you can use?

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    Default Re: Blank screen after EF firmware change to hybrid

    Quote Originally Posted by Lsdmeasap View Post
    Ahh, well battery overnight should have done the trick.

    Try removing all hard drives and put your CD into the first SATA Slot, then put in the motherboard cd and see if it will flash that BIOS. I don't think any of this will help since you are not getting a bad flash screen, but it might.

    Do you have another CPU you can use?
    Trick with CD didn't help.

  6. #6
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    Default Re: Blank screen after EF firmware change to hybrid

    Ya I didn't think it would since it does not appear you have a Bad BIOS issue.

    No other CPU's to try with?

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    Default Re: Blank screen after EF firmware change to hybrid

    Quote Originally Posted by Lsdmeasap View Post
    Ya I didn't think it would since it does not appear you have a Bad BIOS issue.

    No other CPU's to try with?
    No other CPU.

    I received answer from Gigabyte Tech Support, they advice to remove CPU and clear CMOS. If it won't help, BIOS is broken.

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    Default Re: Blank screen after EF firmware change to hybrid

    Hmm, see PM about shorting MAIN BIOS, then we will find out if the BIOS is to blame

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    Default Re: Blank screen after EF firmware change to hybrid

    I often wondered what would happen if you flashed the BIOS with an update then changed the cpu (unlocked). Then what if the backup Bios on a Dual Bios system which still contained the earlier BIOS kicked in, but did'nt recognize the newer type CPU. I am thinking it could render that CPU useless. Untill you reflashed. But without another earlier model CPU it would be imposible to test this theory. Although I don't know. This is just a thought. Do you have a older cpu you could borrow? It may be time to send her in for a repair. So at this point it's worth a try to use jumpers and force a backup, as Lsdmeasap suggested in the PM. It looks like you may be removing that motherboard from the case. Before forcing the backup you first may want to try a bench P.O.S.T.--->http://forums.tweaktown.com/f69/how-...ch-test-38512/
    Last edited by artdrivers; 06-30-2010 at 08:46 PM.
    http://forums.tweaktown.com/gigabyte...ench-test.html
    http://www.gigabyte-usa.com/FileList...ios_qflash.pdf
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    Default Re: Blank screen after EF firmware change to hybrid

    Quote Originally Posted by artdrivers View Post
    I often wondered what would happen if you flashed the BIOS with an update then changed the cpu (unlocked). Then what if the backup Bios on a Dual Bios system kicked in, but did'nt recognize the newer type COU. I am thinking it could render that CPU useless. Untill you reflashed. But without another earlier model CPU it would be imposible to test this theory. Although I don't know. This is just a thought. Do you have a older cpu you could borrow?
    I can't.

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