it went into sleep mode while i was useing it and now when iturn it off and on ir wont come on. so i go inside the tower and take out one of the memory stick and it comes on but as soon as i put the stick back in it wont work
So do you have a question here? You have already identified your problem. Either the RAM stick is bad or the RAM slot is bad. Here's a suggestion. When you remove the suspect stick, take the other good stick and put it in the bad stick's slot. If it boots up you know the "bad" stick is bad. if it doesn't then remove it and put the "bad" stick in the good slot. If it boots you know the slot is bad and you need a new motherboard. Clear as mud?
Goin' Fishin' (Some day)