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External disk is not been detected - Toshiba Satellite M45-S351 Notebook

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Check the BIOS setting, make sure the hard disk is set to Auto (detect) or change the settings to default settings (your BOS may not have this option) then save and reboot laptop.
If the hard disk has not been detected and/or Unable to find the operating system, it means you may have a faulty hard disk or a faulty hard disk controller or the hard disk may not be making proper electrical connection.

To reseat the hard drive, remove the hard drive and reinsert it into the laptop a few times and see if it boots up..
If it still does not see the hard drive then the fault is probably the hard disk. To test if the hard disk is faulty, remove the hard disk and insert it into a hard drive USB adapter and connect it into the USB port of a working computer. If you don't see this drive as an external drive then you will know its faulty. Then you will need to purchase a hard drive, insert it into your laptop then install the Windows operating system and all your device drivers and programs to get your laptop operational again.

If the hard drive is OK the the fault is with the disk controller, and it is near impossible/expensive to repair the motherboard. Put your money towards a new laptop and put the hard disk into a USB hard disk adapter case and use it as as a portable external hard drive.

Best of luck.

Posted on Dec 12, 2008

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