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These instructions were given to a member when the 'Auto-Detect Hard Disks' option in the BIOS didn't find the hard disk that was fitted inside their PC. It assumes that only one hard disk is fitted.


Disconnect the PC from the mains.
If possible, take the base unit to an area of the house that isn't carpeted (to try and avoid static electricity).
Remove the lid or right-hand side (viewed from the back) of the system case.
Towards the front of the case, you should see the CD-ROM drive at the top, the floppy drive in the middle and the hard disk at the bottom.

Unscrew and remove the drive and note the settings for that drive for Cylinders, Heads and Sectors (CHS). It will be probably be shown in a format like 16383/16/63.

Make sure the the jumper (very small plastic plug that sits over a couple of the small pin terminals) on the back set the Master position. There is normally a label on the drive that shows the jumper pin settings.

Refit the drive.

 

Make sure the grey IDE cable is securely connected to the back of the drive. Push your finger along the connector to ensure it's firmly seated across the whole connector.

Make sure the power cable is firmly plugged in - it should feel pretty tight.

Refit the system case. Plug the mains power, keyboard, etc back in.

Switch on and go into the BIOS. Go to the Auto-detect hard disk option.

If it still says 'None', then go into the screen that lists the drives, move across to the 'Type' field in the 'Primary Master' row and set this to 'User' or whatever similar option you have where you can type in the Cylinders, Heads and Sectors. Type in the CHS settings that you noted down earlier. The 'Size' field should now display the correct size of the hard disk. If it doesn't, there might be a 'Mode' or 'Block' option in the last column on the right, which you can probably set to 'Auto'.

Exit the BIOS, saving the changes.

The PC will reboot and will try to load Windows. Does it work now? If it doesn't, you've probably got a faulty hard disk. We might be able to still try something else though, so let us know (you'll need to tell us if you couldn't follow any part of the above instructions because you didn't have the same options, etc).

(Note that, like the Windows registry, incorrect use of the BIOS may have adverse effects on your system).

To ask questions about detecting hard disks or get help with your computer visit our forum

 


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