Hello everyone, this is my first post here. I hope you dont mind me asking a question or two as my first post.

I recently decided to open up the hood on my wife's 1st gen intel imac and tinker around. I upgraded the HDD and tried upgrading the processor to a santa rosa (yeah, i did not do careful enough research).

After i realized the Santa Rosa was not compatible, I popped the old Core duo back in. Well, I got everything back together ok, but now. I get the black screen upon reboot. I tried resetting the PRAM to see if the grey screen would show. Nothing. I only get the chimes. Does anyone have any advice on what I should try next? I am fairly certain that all of the connections to the lcd is connected good and I would hate to disassemble the thing again (it would be the 4th time). Is there anything else I should try? thanks in advance!

PS: also seems like the internal fans are ALOT louder than they were before. I am really stumped on this one.

Most likely something that happened when you popped the original core duo back in.
Does it make any noise at all? What about the power light?

Initially the fans were blowing loudly. I opened the case back up and found that I had missed a connection to the fan cooling the GPU(?) and I plugged it back in. That at least took care of the noise. I did not re-seat the CPU but checked all of my connections that were visible. The power light lights up like it would if I was booting up normally. The Superdrive spins my Leo DVD. However, I am not sure but, is it possible that the freshly installed HDD could have something to do with the video not working?



Haha, I have took apart every computer I have ever owned, but this iMac has pretty much humbled me.
My wife is not too happy either... I am currently trying to figure out how to Hack my PC (Asus P5Q Pro) to run Kalyway... frustrating to say the least.... but I will save that for a different post.

I seem to remember reading somewhere incompatibility with some HDDs.

There are also reports of HDD firmware incompatibility on some disks - you will find more info on the following site ---- http://www.xlr8yourmac.com/