G5 imac is acting up. I was in and out of the g5 .. logging out of user accounts .. in an attempt to clean it up before giving it away. today it boot loops over and over. i cannot get in safemode. i reset the pram, i was able to bring up the firmware and verbose ... but it just will not start up. i was able to locate the hd but i am not able to click on the icon and next the arrow. finally, i was able to see the hd in target mode. any suggestion ..... ?? oh yes, i opened it up and took out the memory sticks and switched them. thxs.