Windows 8.1 Help needed to re-image or refresh

[Cimi]

Hi all,

Any help on this would be most appreciated and thanks in advance for taking the time to read.

Aim To Refresh or Re-Image Laptop

System Info

OS Version: Microsoft Windows 8.1 with Bing, 64 bit
Processor: Intel(R) Pentium(R) CPU N3540 @ 2.16GHz, Intel64 Family 6 Model 55 Stepping 8
Processor Count: 4
RAM: 3975 Mb
Graphics Card: Intel(R) HD Graphics, -2044 Mb
Hard Drives: C: Total - 461410 MB, Free - 394546 MB;
Motherboard: Notebook, KHLAP15N3540A
Antivirus: Kaspersky Internet Security, Updated and Enabled

Kogan Atlas X1510 Laptop Model KHLAP15N3540A
Windows 8.1 with Bing 64-bit ( pre-installed , no product key on device )

Errors that appear most prominent to an untrained eye

Other area information ( I took screen shots and have on Yandex Server )
Event Viewer Shot

https://yadi.sk/i/XArnvJdnfgsY8

Here is the CBS.log

https://yadi.sk/i/gcSsQ0fXfgsYW

What I have tried

System restore has no valid restore points
Scan with IOLO System Mechanic Version 14.5 (IOLO potential cause of initial problem with registry changes??)
Scans with Kaspersky 2015
Created ISO boot disk. ISO disk obtained from Microsoft Website
When I access advanced boot options and load from ISO. When I am asked for Product Key I am told that it is not correct. I have the Product Key from third party software. The Key matches in BIOS and Registry. However secondary Product Key Finder listed a different product key.
Wrong product key? Or Wrong ISO copy?
That’s about as much as I have so far. This is beyond me and any advise would be most appreciated. Ive only had this laptop no longer than a month or so.
Kindest Regards