Solve : Can get past post but not into Bios?

1.	Solve : Can get past post but not into Bios?
Answer» Have a GA-MA785GM-US2H and phenom II X4 965 where I CHANGED fan mode from auto to PWM and got a lockup while surfing. I was able to change back to auto fan mode but saving must have borked bios.Could only get a black screen; leds, fans, HDD and card spin. I've already t-shot everything. The problem is this bios issue. Downloaded the bios from GB and put it on a flashdrive and was able to get past post to the preliminary screen where you press Del for Bios but that's as far as it would take me. Now, in trying to reboot, I just get a black screen again. Anyone have any advice as to how I can access bios, so I can save/flash and get this to behave NORMALLY? Thanks, MacWhy are you convinced it's a BIOS issue ? ? At any rate at boot enter BIOS and select default settings...press F10 to save changes and exit.He said: Quote Anyone have any advice as to how I can access bios, so I can save/flash and get this to behave normally? Yes, do like Patio posted above and hit the right key during POST. In a rare case the CMOS battery might have been dislocated or maybe it went bad. In any case, here is a method yu can use on almost any motherboard to force it to get to the BIOS screen. This is for the extreme scenario. Turn power off. Really off, remove the power cord. Next open the case and disconnect the hard drive. If the mother has INTEGRATED VGA, remove any other video cards. Connect a VGA monitor to the built-in VGA, Remove all USB devices except a good USB keyboard or PS/2 keyboard. Nothing else. Now insert the power cord, press the power on switch. It should get into the BIOS after a warning message about no boot device. Try default settings. Remember, with modern motherboards yu have to really turn of fall power before you do anything under the hood. Just hitting the reset button is not the same as a real power off cycle. So do that before you connect the hard drive again. If that does not work for you, please come back and somebody will help you. Thanks Geek and patio. Ended up it was the cpu. Must have done SOMETHING to it w/the HSF and new fan. Worked when fan was set to auto but not PWM. Popped in the OLD cpu and booted fine. Now my only question is do I trust it was the cpu (likely) and try a reboot or download @Bios and use it to be sure bios is good. Think the odds are heavily in favor of the former. Mainly b/c the GB product page states DualBios "automatically recovers bios data when main bios crashed or failed." If reboot is good I should be set. Otherwise I'll still be in the soup and will post back. Thank you.Hi what bios version is the motherboard running at the moment. For the new cpu you need bios version F5 or later. I would load the F11 bios from here https://www.gigabyte.com/Motherboard/GA-MA785GM-US2H-rev-10#support-dl-bios Yeah any of the Bios revs should work w/a supported cpu. Problem was I couldn't get past post. Was certain the cpu wasn't killed from a simple freeze. My bad, cpu is toast. PWM mode is dangerous in my opinion. Believe there are 2 other settings you can make in bios that may, may be crucial to helping PWM mode operate w/o issue. (I'm on another system at the moment.) Have read elsewhere that at least some believe PWM mode needs to be 'calibrated' at first... In any event, don't think I'll be using PWM mode in the future. At least for a cpu fan. Thanks.

Answer»

Have a GA-MA785GM-US2H and phenom II X4 965 where I CHANGED fan mode from auto to PWM and got a lockup while surfing. I was able to change back to auto fan mode but saving must have borked bios.Could only get a black screen; leds, fans, HDD and card spin. I've already t-shot everything. The problem is this bios issue.

Downloaded the bios from GB and put it on a flashdrive and was able to get past post to the preliminary screen where you press Del for Bios but that's as far as it would take me. Now, in trying to reboot, I just get a black screen again.

Anyone have any advice as to how I can access bios, so I can save/flash and get this to behave NORMALLY?

Thanks,

MacWhy are you convinced it's a BIOS issue ? ?

At any rate at boot enter BIOS and select default settings...press F10 to save changes and exit.He said:
Quote

Anyone have any advice as to how I can access bios, so I can save/flash and get this to behave normally?

Yes, do like Patio posted above and hit the right key during POST.

In a rare case the CMOS battery might have been dislocated or maybe it went bad.

In any case, here is a method yu can use on almost any motherboard to force it to get to the BIOS screen. This is for the extreme scenario.

Turn power off. Really off, remove the power cord. Next open the case and disconnect the hard drive. If the mother has INTEGRATED VGA, remove any other video cards. Connect a VGA monitor to the built-in VGA, Remove all USB devices except a good USB keyboard or PS/2 keyboard. Nothing else.

Now insert the power cord, press the power on switch. It should get into the BIOS after a warning message about no boot device. Try default settings.

Remember, with modern motherboards yu have to really turn of fall power before you do anything under the hood. Just hitting the reset button is not the same as a real power off cycle. So do that before you connect the hard drive again.

If that does not work for you, please come back and somebody will help you. Thanks Geek and patio. Ended up it was the cpu. Must have done SOMETHING to it w/the HSF and new fan. Worked when fan was set to auto but not PWM. Popped in the OLD cpu and booted fine.

Now my only question is do I trust it was the cpu (likely) and try a reboot or download @Bios and use it to be sure bios is good. Think the odds are heavily in favor of the former. Mainly b/c the GB product page states DualBios "automatically recovers bios data when main bios crashed or failed."

If reboot is good I should be set. Otherwise I'll still be in the soup and will post back.

Thank you.Hi what bios version is the motherboard running at the moment. For the new cpu you need bios version F5 or later.
I would load the F11 bios from here https://www.gigabyte.com/Motherboard/GA-MA785GM-US2H-rev-10#support-dl-bios

Yeah any of the Bios revs should work w/a supported cpu. Problem was I couldn't get past post. Was certain the cpu wasn't killed from a simple freeze. My bad, cpu is toast. PWM mode is dangerous in my opinion. Believe there are 2 other settings you can make in bios that may, may be crucial to helping PWM mode operate w/o issue. (I'm on another system at the moment.)

Have read elsewhere that at least some believe PWM mode needs to be 'calibrated' at first... In any event, don't think I'll be using PWM mode in the future. At least for a cpu fan.

Thanks.

Solve : Can get past post but not into Bios?

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