Tips Service at Home 3

I confuse now ... , cause my friend in Garut always sms about his CPU is can't detect Harddisk and Floppy Disk. Cause I'm in Cimahi and my friend live in Garut, how can I service that ? but make a solution for him. I send sms like this :

1. Open the case
2. open power cable from Powersupply which related to harddisk & Floppy disk
3. Try to make another power cable or the last one
4. Try to on again
5. Press del in keyboard
6. Look at the bios setting are the harddisk can be detected?
7. If it doesn't, find harddisk detected in bios setting and press enter
8. Save and Exit
9. Good luck .....