I got a new iMac from Apple Store Thailand 7 days ago. I upgraded the memory 4x4 Corsair bought from a Apple Studio Store in Bangkok. The software I use is Adobe Suite and Lightroom. After 5 days I had my first "Black Screen Of Death" - and the last 2 days I have had it 4 times in total. I am doing nothing beside using safari,itunes,adobe suite and lightroom. I have 4 USB drives attached. What do you think is going on, and what are my best options at this point? 7 days since Apple delivered me the iMac.