Windows 10: Un-allowed DMA capable bus/devices detected - [Error Message from MSInfo32] possible cause...

Un-allowed DMA capable bus/devices detected - [Error Message from MSInfo32]I'm trying to get Virtualization-based security measures implemented but I get the above error message.I have: Window 10 ProI have disabled BitLocker automatic device encryption, plus turned it completely BitLocker is not really involved in this problem, so I'm just trying to head-off that suggestion.I have confirmed that my computer has no external DMA ports.I have an installed and enabled TPM.Synopsis of the Problem:In the following website, they suggest checking the Registry List of 'un-allowed Buses', as describ

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Reasons for failed automatic device encryption: Un-allowed DMA capable

Looking through MSINFO32 I see the line:
Device Encryption Support Reasons for failed automatic device encryption: Un-allowed DMA capable bus/device(s) detected

What does it mean? My laptop C:\ drive is encrypted the whole thing. Does this mean I have a problem?

I have these lines too:
Secure Boot State On
PCR7 Configuration Bound

MSINFO32-09-22-2017.txt

 

Un-allowed DMA capable bus/device(s) detected

Microsoft provides this documentation about this message.

Both the blacklist and whitelist are in your registry at HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\DmaSecurity. I’m not aware of an automated process to check this, though creating one should be pretty easy.

A typical candidate that exists on most systems is “PCI-to-PCI Bridge”. Curiously, “PCI Express Root Complex” is both in AllowedBuses and UnallowedBuses.

 

Un-allowed DMA capable bus/device(s) detected

My problem is how can I find out which device on my laptop is Un-allowed DMA capable. I tried disabling my USB devices and unplugging laptop from docking station. My colleague has same laptop model and he is not having same issue as I do.

System Information