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. + [) {0 d+ p: \You know, I mean, you should let the BIOS to recognize the newly installed HDD.1 {% g- T* \6 D! h; p1 O
PS: against your description, you mayy MEMORY may meet difficulty. unplug them and reinstall after proper cleaning.