So I got a brand new iMac 5 days ago and I connected my dell 24" (2407) to it.. I seem to have a yellowish tint.. I tried to calibrate it and it still seems to have it on there... On my pc the dell has a perfect screen.. Any idea what could be wrong? Also on a side note Yesterday I go to turn on my new iMac and it wouldn't turn on.. I kept on pressing the power button and it wouldn't turn on.. So I unplugged the power cable and put it back in and nope didn't work... so at this point i am upset i pressed it really hard and it turned on.. So i turned it off and pressed the button again and it seems like it is working again, but why would it do that in the 1st place??