I have 2 laptop hard drives, both are seagate one is a 250 gb momentus 5400.4 the other is a 120 gb 5400.3. The 250 one was in a friends laptop and she was having troubles with it so I took a look at it. After looking up error codes and such I found out that the laptop had over heated and possibly ruined the HD but I was able to hook up the HD to my desktop for a few sec so I know its at least semi ok. Anyways because the two HD's are similar I'm wondering as an absolutely last resort if i could swap the 250 gb platter into the 120 gb?