Reipete

So here's the situation guys....I bought a GT750M5 Ultrabay from a reliable dealer that I know, and plugged it in. However, apparently the system fails to detect it, the second card cannot be shown at device manager, I tried to update vBios through the lenovo official website and crap...it saids something like EEPROM not found, MINDBLOWN. So, i gave my laptop to this friend of mine to fix it, he updated the bios to 2.07 and nothing is fixed except this time, the system with the SLI cannot be started, after i pushed power button, black screen appears (not even the "lenovo" word) but, without the SLI the system works fine and normal startups can be made. MINDBLOWN again. This situation is really irritating me as I tried every method and nothing is working... Really appreciate any help from you guys!!