Hi HenrikD,
I am sorry for your trouble but let me help you.
The driver 2932 is an old driver and I think it was not intended at that time for Windows 8.1. You mentioned you are using a Sony computer so I was wondering if you have tried updating the BIOS and installing the latest driver they have designed for your unit?
From our side you can update to latest driver by downloading the software at:
https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=23885&lang=eng&ProdId=3712
If you find problems during the installation you can try the steps mentioned at this location:
https://communities.intel.com/docs/DOC-22542
Kevin M