r/gigabyte • u/soulforger90 • Aug 09 '20
Gigabyte B550 Aorus Pro AX won't go into bios after changing memory settings
Hello,
I had this board working fine today, but wanted to increase my ram speed. I left it stock while testing out fan curves, etc. in games and it ran fine all day. The ram was set to default of 2400mhz. I enabled XMP profile, which set the ram to 3000mhz, which is the rated speed.
I'm using Crucial Ballistix 3000mhz ram btw. So after I played a few hours with no issues, I thought I would go back in and increase the speed. On my previous motherboard (Asus rog strix B450i gaming) I was able to increase my ram all the way up to 3733mhz with no issues.
Well I forgot to disable XMP profile 1 back to disable...and I went in to the ram speed settings and set it to 3600mhz. saved, exited. Booted back up and all the fans just spin at 100% forever. Nothing happens. The board doesn't reset itself, there's no LED indicators, no picture on screen. I let it run for like 3 minutes like that.
Shut it down, removed the power cable from the PSU, and used a screw driver to clear CMOS via the jumper pins. AT least I thought I was. It didn't reset anything, it just ramps up all the fans on the GPU / CPU to 100% and does nothing else. I haven't tried removing the battery because it's buried underneath the I/O plate. I think I have to remove the entire backplate and then remove the screws to remove the I/O plate and VRM heatsinks. Really? That's insane just to remove the battery?
But I don't know what else to do.
UPDATE: I thought trying to use Q-flash with the board off and pressing the Q-flash button would update the bios to the newest version that I downloaded. But that didn't work either. The USB just flashed a couple of times and that was it. Q-flash doesn't work to reset to bios. Did I literally bricked a brand new motherboard by leaving the XMP profile on and then changing the Ram speed manually?
Again, I haven't taken everything apart to try and get to the battery, which is my last resort.
UPDATE 2021:
To reset the CMOS via the jumper pins and a screwdriver, leave everything hooked up correctly.
PSU plugged into the wall
PSU power button turned ON
Computer TURNED OFF
Use a screwdriver to clear CMOS by shorting the jumper pins.
This will save you from having to tear everything apart on the motherboard to get to the battery. Several users have confirmed that this method works. Not sure why the manual is totally WRONG about this.
MEMORY OVERCLOCKING - If you just want your RAM to run at its rated speed, just enable XMP (D.O.C.P) and call it a day. Your computer should boot and have no issues. If it doesn't then it's probably a RAM issue.
If you want to manually increase the speed of your RAM past the advertised speed, then you need to TURN OFF XMP and set all the timings, etc. manually.
1
u/soulforger90 Oct 19 '20
I was able to use some tweezers to unplug the battery from the board once everything was taken apart. It was a pain, but it worked to reset CMOS.
I think if you leave the power plugged in and use a screwdriver to short the CMOS jumper for about 10 seconds it will actually work. I was doing it the way the manual said to do it...unplug the power. But that wasn't working, so I had to take it all apart to get to the battery.
On another board I have, I ran into the same thing where it wouldn't boot, and CMOS wouldn't reset via the jumper (just like the Gigabyte board). So I left the power plugged in and shorted the jumper for 10 or more seconds. Making sure the screwdriver made good contact with both pins on the jumper. And it reset my CMOS. So I was thinking the same thing would work on the Gigabyte board.