press "Delete" when the system starts up to enter BIOS.(The mathod might be various depends on brand of your system, your user manual may help you) Then find a option such as "IDE Detection" or the like. 2 _* l$ S# ?0 D- ]& } o1 g4 A: [You know, I mean, you should let the BIOS to recognize the newly installed HDD. & X; R6 a' m2 S1 Y7 d7 JPS: against your description, you mayy MEMORY may meet difficulty. unplug them and reinstall after proper cleaning.