The next step is to look in Device Manager to see if the drive is enabled and working properly.
I'd tell you where to find it, but you didn't say what operatiing system your using, or anything else about the machine.
i got a nasty virus last week. luckily i have two hard drives. a 40gb and a 20gb. problem is i do a lot of video editing and the 40gb drive will no longer function. my pc wont even recognize it is there. however, when i press f2 after rebooting i can see that it is there. bbut when i hit my computer it doesnt exist. i need that 40gb drive to save all the home movies and what not to. any help will be appreciated.