MSI Z390 MEG ACE new 1B1 bios wont boot...

mkramm

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I have a gigabyte 3080, I updated the bios to the new resizable bar, updated my MSI z390 MEG ACE to the 1B1 bios (9900k CPU). I go into the bios and activate the resizable bar, and save and exit, the computer will just boot into bios after that, no matter if i turn off resizable or not. I have to reset the CMOS completely to get the computer to boot normal again. I have a M.2 boot and 2 M.2 in raid in windows, no other boot disk connected to the system. Help?
 

Svet

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What debug led shows when unable to boot?
Can you try another GPU?
Have you updated vbios of your GPU too or only the BIOS on the mainboard?
 

vick1000

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Did you reconfigure the drives and boot options back to what they were after updating the BIOS?
 

mkramm

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No I dont have another GPU, I only have one 3080. Yes I flashed the bios on the GPU first, downloaded the driver from nvidia, then updated the bios on the motherboard to 1b1. I then realized it was a setting in BIOS that had to be turned on. I turn it on, then the computer just goes straight to bios every time, its not throwing errors it just puts up the logo and goes straight to bios like i pushed DEL key.

If I clear the BIOS and set everything to normal, but I dont turn on the Resizable Bar, then it works perfectly. But if I toggle the bar option the computer will then boot straight to bios each and every time after that, even if i turn off the bar options. I have to clear the BIOS with the hard key button and then reset everything.

Its like the resize bar option is messing up my M.2 drives. I have 1 boot and then 2 more installed that i raid together in windows. No other SSD or hard drives installed.

I am using a vertical mount on the GPU (I have to its too big to fit the normal way ;) )
 

Svet

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Do you have OS installed in UEFI Mode?
 

cabralke155702db

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I have the same board. Is the bios stable? I updated to the beta bios for the resizable bar feature. Then I quickly reconsidered and installed back the previous stable build. Hopefully MSI will release a stable build for us to enable resizable bar. I feel it's pointless to upgrade motherboards to use this feature. Considering those using i9 9900k CPU's, they're still real good CPU's. Also, will I benefit much from resizable bar with my EVGA 3090 FTW?
 

citay

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All the Re-size BAR updates are beta and will most likely remain so. It doesn't mean they're unstable, it means they don't want to deal with support questions about side-effects from the feature. They have enough on their plate with Z490 and Z590 BIOS updates for Rocket Lake CPUs.

Even though i don't use Re-size BAR, i updated my Z390 ACE to the beta BIOS and it works like a charm. I have thoroughly optimized my RAM timings for example, and the BIOS gave me zero problems about that, which is a good indication that the important functions are as stable as they have been before.
 

cabralke155702db

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All the Re-size BAR updates are beta and will most likely remain so. It doesn't mean they're unstable, it means they don't want to deal with support questions about side-effects from the feature. They have enough on their plate with Z490 and Z590 BIOS updates for Rocket Lake CPUs.

Even though i don't use Re-size BAR, i updated my Z390 ACE to the beta BIOS and it works like a charm. I have thoroughly optimized my RAM timings for example, and the BIOS gave me zero problems about that, which is a good indication that the important functions are as stable as they have been before.
Why do you think they will keep it at beta? I mean, at some point they'll have to make it stable. I understand they have newer boards to work on, doesn't mean their older boards are trash either.
 

citay

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Why do you think they will keep it at beta? I mean, at some point they'll have to make it stable. I understand they have newer boards to work on, doesn't mean their older boards are trash either.
As i said, beta in this case doesn't mean "unstable", beta means basically "no support for this version". They added the feature as a courtesy for the 300-series boards, meaning, we can be lucky to still get this feature implemented when there's already two newer generations of Intel chipsets out. Most of the issues for the Z390 boards should be ironed out by now, so it's not like they would still get a lot of normal BIOS updates.

As for the performance improvements: It's mostly in lower resolutions, there you can have ~5% performance increase from the feature. Some special games can benefit more than 10%. Generally, you will see a benefit and never a decrease in performance, so if available, turning it on is a no-brainer.
 

Svet

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Can you tell what HDD/SSD is this [brand, model] and in which port is connected?
 

mkramm

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M2_1 is a ADATA SX8200PNP This is the boot drive.
M2_2 is a Crucial CT1000P1SSD8
M2_3 is a Crucial CT1000P1SSD8

M2_2 and M2_3 are Raid together in Windows.

These are the only drives I have installed.
 

jon.kramer

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Hmmm, sounds like a bug in the implementation of resizable BAR in the BIOS issued...........
 

jon.kramer

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It does not look like Nvidia and Intel motherboard mfgs have had the smoothest Re-Bar roll out here. They got caught sitting on their hands again while AMD quietly worked out the kinks of it with their GPU and CPUs and then announced the "feature" with the newest GPU and CPU release. Made Nvidia and Intel MB mfgs scramble to have the "feature" also.
 
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