Desktop Operating Systems and Recovery

Hello,
I will try to describe situation: 

I play here with two HP Thin Clients T630.

In the beginning all updates were broken.
And I tried to delete all files in C:\Windows\SoftwareDistribution related with Window Updates and nothing.

I tried sfc /scannow and only few errors but they are not critical.

I tried DISM /Online /Cleanup-Image /RestoreHealth
And now all updates  are okay without Windows 10 Enterprise 2016 LTSB Cumulative Update...

I tried to reset Windows Updates and nothing.

I tried DISM /Online /Cleanup-Image /RestoreHealth /Source:D:\sources\install.wim where install.wim is from this iso file 14393.0.160715-1616.RS1_RELEASE_CLIENTENTERPRISE_S_EVAL_X64FRE_EN-US.ISO.
But nothing.

My big troubles are related with to much RAM usage, for example  85% RAM usage, 15% are free, 45% used by the system, but 40% are missing, I don't know where they are used, I search now 40% RAM where they are used?
The T630 is with 4 GB RAM, and I only power on system, without addition software.

Other my trouble  is with 100% SSD Disk activities.
I can't determine what is wrong?
Write and Read operations are okay, but disk activities hit 100% all the time.

I tried to replace image  with Thin Update  Software from this Thin Client T630.
From Thin Update software I can download only Win10Iot Image 16WWFTCJ602 English (Setpt 2017)
I created successfully bootable flash drive with this image and I completed the process successfully.
But nothing changed..

Now I downloaded Linux Image and I put it in T630 successfully and everything is fine.
Now  I try to install  Win10Iot Image 16WWFTCJ602  but I receive error related with license?
"***Error*** The system does not have license for the image OS! "
I checked T630 Thin Client and I read the original image is 16WWFTEJ601.
But I can't find this version of image anywhere.......
The difference here is in the way how I create image, here I created image form desktop HP machine with HP Thin Update Software, not from T630 device with HP Thin Update Software.

Why I am in trouble now and with licenses? 



Someone with experience with HP Thin Clients?