Hello guys. I need some help here.. I have a sapphire 4890 (new edition) with the qimonda memory chips. The thing is, im not sure if the problem is software side or hardware side. I installed natit and anything else needed to boot with injectors, then replaced the x1900 with the 4890. I only had one PCIe cable to connect to the card (the one came with the x1900) so the other one is connected with a molex cable through the 2nd superdrive. When i boot, the card sounds spinning and as one would expect, spins faster for 1 or 2 seconds, then goes silent... That's making me think that its getting powered properly.. or maybe not? Anyway, i never got any picture even though i was sure the mac completelly booted (i can even hit ctrl+eject and then enter to shutdown). What could be the problem?? I'm having a hard time to find another PCIe cable but if thats the case, im getting it
Hi sOwl,
IMHO your card is powered enough with your PCIe cable and your molex.
It shouldn't be a power problem.
Which natit did you use, did you follow this https://forums.macrumors.com/posts/8742713/ ?
Did you try, when you are sure OS finished to boot, to unplug your display from the card and plug it back ?