I've been running with Hyper-V reactivated for several weeks now and everything is working fine. No more BSODs :-)
Wifi also connects snappier with the new card after resuming from sleep so seems...

Here's an update since my last post:

I uninstalled Hyper-V on the laptop and that seems to have solved the DRIVER_POWER_STATE_FAILURE crashes - I've been running in this configuration until...

Right, will uninstall Hyper-V and will not install any other virtualization for now and just run plain vanilla until I get the wifi card switched. Will see how it goes i the meantime!

BTW: I...

I have ordered the AX200 wifi+bt card and it will arrive in the middle of next week. I have paused driver verification while waiting; it does slow down things a fair bit ;).

MrPepka: could you say...

I found I can actually get the even newer Intel 9260 for a cheaper price than the others mentioned. As I understand it has the same antenna connectors and all these M2 products just connect to the...

Were the errors you saw with the wifi driver of the kind that causes 9F errors, or is this a new problem revealed by the driver verification?

I move around a lot so will be too hard to stay on...

Coming back and waking up the laptop to read your last message I first had a DRIVER_VERIFIER_DETECTED_VIOLATION bugcheck happening. Zip file attached.

Though, the sleep/wakeup crash scenario was a...

Ah good.
I have noticed one small thing; the Alps touchpad + pointing stick doesn't fully restore its settings after sleep now that Driver Verifier is active. After wake up I have to go into
...

Interesting, sounds good! I have activated the verifier.exe settings and will see how it goes under normal use (I tried a few sleeps immediately but they worked ok).
Will I see some message once...

Ok it seems we are still on a cycle of a few days with the 9F bugcheck happening ;-) Zip file with new dump attached. I removed the previous dumps from the zip to save space. No Hyper-V guest running...

Ok good then we'll hope for the Intel software to do the trick :-)
(Toshiba's update program doesn't give any newer versions so seems harder to get an update there.)

Ok now updated using Intel BT_21.10.1_64_Win10.exe which upgraded the "Intel(R) Wireless Bluetooth(R)" device from
19.10.1635.483 (2016-09-02)
to
20.100.5.1 (2019-04-17)
Will see how it goes the...

The 9F bugcheck just happened again.Zip file with new dump attached. I removed the previous dumps from the zip to save space.
This time I did the normal laptop close lid triggering S3 sleep. Hyper-V...

The 9F bugcheck happened again last night. This time though I was doing S4 hibernate by pressing power button and not S3 sleep triggered by closing the lid. I thought hibernate wasn't as picky on...

Great, big thanks MrPepka for the explanation :-)

- - - Updated - - -

Ah, I realized I can disable the LTE modem ("WWAN") in BIOS Setup. Now done that and the EM7305 device is gone altogether...

Ok, I currently don't use the LTE modem so will disable in Device Manager (no hardware buttons though).

Were any devices mentioned in the latest dump?

The 9F bugcheck happened again today.
Zip file with new dump attached. I removed the previous dumps from the zip to save space.
Does the stacks in the new dump show any devices with problems?...

Ok so now I have upgraded the Wireless-AC 7260 driver through Intel's WiFi_21.10.1_PROSet64_Win10.exe package.The AC 7260 driver went from 18.33.14.3 (2018-09-03) to 18.33.17.1 (2019-04-29).

- - -...

I already updated the I-218V driver in the previous post #5.
I will look into the wifi driver!

Did these devices show problems in the dump?
Was the O2Micro smartcard driver ok this time? I don't...

The 9F bugcheck happened again today. The scenario is like this:

I close the lid on the laptop to put it to sleep.

This should normally put it to sleep within a few seconds with a slowly...

Ok nice. Device Manager currently shows:
O2Micro, 2015-05-29, oz776x64.sys, 2.1.4.240
and I updated through Update Driver > Search Windows Update and actually got a quite new driver:
O2Micro,...

Ok so I have now upgraded the network device to the latest available according to Intel's download site (Intel® Network Adapter Driver for Windows® 10 v25.0).
As the device is in an integrated SoC...

About overclocking:
No I am running the laptop according to Toshiba's vanilla install, no performance tweaks.
The frequencies you are seeing is Intel's standard scheme for laptop processors with a...

Since the preparatory updates before Windows 10 (64-bit) v2004 and now after getting v2004 pushed to my Toshiba laptop, I have been getting DRIVER_POWER_STATE_FAILURE BSODs when sleeping/resuming.
...

​Sorry for not getting back sooner but this issue was resolved by disabling Windows 10 memory compression. I suspect this new feature has had not much testing on older chipsets but are still getting...