Can't boot without ,,Slow mode" enabled | MSI Z170 M5 Gaming

Joined
Oct 17, 2020
Messages
6
Specification:
PSU: OCZ600SXS2
MB: MSI Z170 M5 Gaming
CPU: I5 6600K
RAM: Crucial Balistix 3000MHz 2x8 GB ( but running at default 2400MHz )
2x SSD


Hello good people :)
I have build new pc rig and in order to don't waste old parts i want to make a pc for my dad & mum.

I took their old pc and replace mobo, cpu, psu and added 2 ssd as in specification above.

Those components were working fine in my previous build but now after placing them in dad & mum pc occured a problem.

Initially, pc won't even boot - it stuck at post code 00 and restart over and over again.
Sometimes it get past post code with higher number like 6* or 7* but restart immedietely.

I figured out to use the ,,slow mode" switch and then pc waked up and booted to windows ( with clock stuck at 800MHz obiously ).

But for the life of mine, I can't force it to boot any other way.

What is also very courious in ,,slow mode" when i replace one of ssd with previous HDD it can't boot either.

I've googled a little bit and found out that maybe disabling in BIOS ,,Intel Adaptive Thermal Monitor" could help. Unfortunatelly, disabling this option also got me into infinite pc restart loop.

I have dissasembly everything and checked CPU / Motherboard pins for damege - but i can't see any.

I'm running out of ideas what could be causing this issue

PSU? But when i put again old mum & dad configuration with this OCZ psu everything is working fine.
CPU? But then it would not work propperly in ,,slow mode"
Could it be something with the motherboard?

I will appriciate your help in this regards

PS. sorry for my bad english :)
 

laurence1211

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Jun 28, 2020
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With stability problems like this, best to check everything. Strip it back to bare minimum and go from there. Personally I'd check the power supply, but checking the ram and ruling out faulty cables is important to. Are you using a graphics card as well?
 

dvair

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Nov 4, 2009
Messages
225
If its older hardware, there may be an issue with things like Fast Boot. Some hardware NEEDS to be fully initialized during the Boot process and can't handle FAST Boot. Also could be that the hardware isn't fully UEFI compliant.
 
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Oct 17, 2020
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@laurence1211

I took everything out of the case and turn on in ,,spider mode" but still only ,,slow mode" is working. I don't have another PSU in hand to check right now, so this test needs to wait.
Tested with GPU and without - effect is this same :/

@dvair

I reset the motherboard to default settings by removing battery and using jumper to clear CMOS. I don't see any fast boot option setting beside ,,memory fast boot" which i set to ,,disabled" - doesn't make a diffrence.
I don't see how this setup can't be fully UEFI compliant - i was using this parts with gtx 970 and rm650 in my previous rig with no complains 🤔

As for now i see two options - during transport i damege motherboard or either something with this OCZ psu is wrong
 

laurence1211

Active member
PRIVATE E-2
Joined
Jun 28, 2020
Messages
424
@laurence1211

I took everything out of the case and turn on in ,,spider mode" but still only ,,slow mode" is working. I don't have another PSU in hand to check right now, so this test needs to wait.
Tested with GPU and without - effect is this same :/

@dvair

I reset the motherboard to default settings by removing battery and using jumper to clear CMOS. I don't see any fast boot option setting beside ,,memory fast boot" which i set to ,,disabled" - doesn't make a diffrence.
I don't see how this setup can't be fully UEFI compliant - i was using this parts with gtx 970 and rm650 in my previous rig with no complains 🤔

As for now i see two options - during transport i damege motherboard or either something with this OCZ psu is wrong
The CPU could also be damaged but hopefully not.
 

DonMcK

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Aug 7, 2019
Messages
33
When you reset the BIOS did you then load optimized defaults?
 

dvair

Member
SECOND LIEUTENANT
Joined
Nov 4, 2009
Messages
225
The Manual says something about that switch being used when doing extreme overclocking with extreme cooling. So if you are just running normal clocks I think you would want slow boot to be enabled.
 
Joined
Oct 17, 2020
Messages
6
The Manual says something about that switch being used when doing extreme overclocking with extreme cooling. So if you are just running normal clocks I think you would want slow boot to be enabled.
Slow boot is useful only during breaking OC records in benchmarks. In everyday use it's like driving with a car with the hand brake on- CPU runs only at 800MHz ( so much potential is wasted )
 
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