Looks like the culprit was not only the BIOS or the sound driver creating BSOD in my Win7 64bit. While the machine was core dumping, I wrote down what I could read and looked useful: e1k62x64.sys . An internet search revealed it belongs to the Intel 82577LM network card driver. I downloaded the version recommended on Toshiba's support pages and now I can safely play my test video from vimeo.
The current, working, version is 11.2.19.0 .
Is it the end?!