10-19-2013 06:09 PM
A little Googling on the error says this is due to a device behaving improperly due to lack of an appropriate driver. The second Geforce GT 750M in the Ultrabay isn't happy in Device Manager after the Windows 8.1 upgrade. Come on Lenovo, BSOD's after a supported OS upgrade?!? Give us some communciation on what you're doing to fix this.
10-19-2013 07:51 PM
Nvidia is the company that dropped the ball on the Windows 8.1 release, that's why there is no new drivers for SLI yet. You have to wait for them to catch up first before you can expect anything from Lenovo.