Update Installing modded bios 200z9 onto VPCEH2D0E:
I used the tools and rom provided and it all worked flawlessly, first the computer had all the menues visible but the the sata devices weren't recognized. While booting from an external disk, another inconsistency was that only 4 cores of the i7-2820QM were recognized, HT was somehow disabled.
After changing graphics aperture size to a lower value, the sata devices were recognizable again but the windows installation wasn't booting, the message was "boot source is inaccesible". I'll try a fresh installation of windows and will try a GPT partition under UEFI.
I'd like to try the modded bios 210z9 still, is it needed any special workaround on the BIOS to make a eGPU work correctly on this model?
The modded BIOS worked, the installed minipcie USB 3.0 module works, this far the computer is booting but with unpredicted results:
No Hyperthreading on i7-2820QM, graphics size over 256MB for Intel HD 3000 made SATA drives unrecognizable (believe it or not)
Links of the dump files before flashing:
https://www.sendspace.com/file/06l699
https://www.sendspace.com/file/pn1cit
I'll report any other updates, thanks in advance.