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ReBAR going nuts on H110 + Xeon E3-1240 v5

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Location
Russian Wild West
System Name D.L.S.S. (Die Lekker Spoed Situasie)
Processor i5-12400F
Motherboard Gigabyte B760M DS3H
Cooling Laminar RM1
Memory 32 GB DDR4-3200
Video Card(s) RX 6700 XT (vandalised)
Storage Yes.
Display(s) MSi G2712
Case Matrexx 55 (slightly vandalised)
Audio Device(s) Yes.
Power Supply Thermaltake 1000 W
Mouse Don't disturb, cheese eating in progress...
Keyboard Makes some noise. Probably onto something.
VR HMD I live in real reality and don't need a virtual one.
Software Windows 11 / 10 / 8
Benchmark Scores My PC can run Crysis. Do I really need more than that?
Long story short, became a proud owner of a rig of a Xeon E3-1240 v5 situated inside the MSi H110M PRO-D.

Everything works like a charm but if I enable the "above 4G decoding" feature in BIOS my OS won't boot anymore.

What I already did:

1. Changed the video card to one I'm truly confident in. No luck, both RX 480 and RX 6700 XT crash at the same moment.
2. Changed the ME version and reflashed. Nothing changed.
3. Disabled common Coffeemod tweaks and reflashed. Nothing changed.
4. Flashed the original BIOS and used a "normal" CPU (Pentium G4500). ReBAR works as intended. Yet it doesn't work with the modded BIOS.
5. Reflashed again so I could use a Xeon again. ReBAR decided to go AWOL once again.
6. Changed every setting in BIOS, changed SATA cables, tried using other OSes, tried reinstalling the OS. Still can't boot. Can't even install anything, installers crash.

Every single piece of tech was changed to a 100% proved working analogue so I'm curious what I can do here.

Any thoughts? Is my resistance futile?
 
Are you talking about the gpu bios being modded or the motherboard bios?
 
Are you talking about the gpu bios being modded or the motherboard bios?
The latter obviously. Xeon won't work with the original MB BIOS.
 
Well then obviously it's not guaranteed to work, because of dropping a xeon cpu in.
 
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If you really want that BAR working, just buy an i7-6700 processor, it's the desktop equivalent of your Xeon and will work well with your motherboard with its original BIOS.
It is a workaround, but you can always sell your Xeon, so not much lost really; besides 6700 has lower TDP (65W) and higher boost clock and integrated graphics. I have one and it's really cool for its power.
 
If you really want that BAR working, just buy an i7-6700 processor, it's the desktop equivalent of your Xeon and will work well with your motherboard with its original BIOS.
It is a workaround, but you can always sell your Xeon, so not much lost really; besides 6700 has lower TDP (65W) and higher boost clock and integrated graphics. I have one and it's really cool for its power.
Exactly once we go on unsupported hardware and requiring mods which break the bios code certain functions stop working.
 
Rebar is kinda gimmicky and you have to turn off a lot of legacy things to get it working.

Its not worth it. Just because you can enable something doesn't mean you need it or should.

You gain maybe 5-10 fps but not universal and a game has to be coded for it.
 
Rebar is kinda gimmicky and you have to turn off a lot of legacy things to get it working.

Its not worth it. Just because you can enable something doesn't mean you need it or should.

You gain maybe 5-10 fps but not universal and a game has to be coded for it.
Its proven to cause lag spikes in some games
 
higher boost clock
It's a lie. 3700 MHz all-core turbo in my Xeon, whereas all-core turbo in 6700 equals to 3500 MHz.
just buy an i7-6700 processor
Not on my menu. I give up on fixing this issue if it cannot be fixed for free.
it's not guaranteed to work
Yeah I know so I don't complain. I am just in search for answers.
a game has to be coded for it
Exactly my case. Above 90 percent games I play tend to benefit from ReBAR.
a lot of legacy things
Such as..?
lag spikes
Not my case. I know the issue is real but doesn't touch me for now.

The general Q is how to turn ReBAR on without spending money on "100%" hardware because I have more interesting ways to spend my quid.
 
legacy as in booting from non uefi drives
 
You put yourself in quite a conundrum.
 
You put yourself in quite a conundrum.
Samurai doesn't have a goal, he only got a path.

Jokes aside, I'm happy to solve this clusterfuck. Just don't yet know how. Will have a bit spare time tomorrow, gonna check some ifs and hows.
 
Get a i7 6700K which you can easily OC to 4.5Ghz all cores or use it as 4.0Ghz all core @ stock.
 
Get a i7 6700K which you can easily OC to 4.5Ghz all cores or use it as 4.0Ghz all core @ stock.
I'm not living in a fairy-tale where 6700K makes sense on H110 motherboards. Neither do I live in a wonderland where they sell 6700K for a reasonable price.

I will not buy any CPU.
 
Too bad....

GL.
 
It's a lie. 3700 MHz all-core turbo in my Xeon, whereas all-core turbo in 6700 equals to 3500 MHz.

Not on my menu. I give up on fixing this issue if it cannot be fixed for free.

Yeah I know so I don't complain. I am just in search for answers.

Exactly my case. Above 90 percent games I play tend to benefit from ReBAR.

Such as..?

Not my case. I know the issue is real but doesn't touch me for now.

The general Q is how to turn ReBAR on without spending money on "100%" hardware because I have more interesting ways to spend my quid.
Sell the xeon chip, being stubborn doesn't help anyone.
 
Sell the xeon chip
Makes no sense, sorry.

I repeat, if mission is impossible if I only make software changes then screw the whole idea. I'll manage without ReBAR. I'm not selling or buying anything.
 
Makes no sense, sorry.

I repeat, if mission is impossible if I only make software changes then screw the whole idea. I'll manage without ReBAR. I'm not selling or buying anything.
Ok being stubborn doesn't get you anywhere...

You're on your own

/Thread
 
Ok being stubborn doesn't get you anywhere...

You're on your own

/Thread
So toxic of you.

It is a thread of "make something not intended to work actually work," and all your recommendations so far are the entire opposite of what I want to achieve.

I was just hoping I am not the only bozo going for such missions. Not your jam, I don't blame you but it's me (and moderators of course) who decide on /thread, not you.
 
Your solution is above, sell the xeon for a chip that is intended for your board or get on lycos/youtube.
 
Just to make everything clear for old and new faces here:

0. Any "solutions" involving buying a "normal" CPU will be ignored because these are not solutions.
1. I want to know if it's possible to run ReBAR with Xeon or not. And if it is possible then how.
2. Buying a different GPU makes no sense because I tested 3 GPUs, one of them is RTX 3060, two of them are RX 480 and RX 6700 XT, which work perfectly fine on other machines and bug out on this one.
3. Using a different SSD or reinstalling OS did not make any sense. Using other Windows 10 version or any other OS haven't helped either.
4. Running ReBAR off causes 0% instability in this machine.
5. Replies such as "why do you need this" will also be ignored because it's obvious why I need it. Because I want to make work something which is not supposed to.
6. To sum it up, only software methods are considered valid. I'm not signing up for buying new wares, for soldering current wares, and whatnot.
 
And you know what, I found a solution on booting with A4GD turned on but it proved to be useless since ReBAR won't launch anyway.

The culprit was "Windows 7 features" turned on. IDK how I did not find this before. At least disabling it made my system boot a couple sec faster. Nice.

Now the thread is completely over and I admit not that I'm stubborn, but I am an idiot.
 
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