Last night I cloned my master HDD to my slave (made it the new master) and replaced the old HDD with a new larger drive. In the process, in order to overcome the big drive problem I installed Intel Application Accelerator so my computer will recognize the full space of the new HDD. So far it isn't partitioned. Since last night my computer has restarted on its own 3 times. Any ideas what might be causing this? I've got an HP Pavilion 7800 running WinME (old, I know :rolleyes: ). Both drives are Western Digital (80 and 320GB). There are also two cd-rom drives. At the time of all three restarts I had several windows open (like IE, my documents, etc), but I don't believe I was pushing my pc's limits. No errors were found on either drive after any of the restarts. Thanks for any help you can provide.