[jamesbraken]

Right click on the my computer and select the manage option then click on the disk management and check it whether it is showing it or not then if not then you must scan your computer with strong updated anti virus and it would visible after scanning, it disappear cause of virus also.

[philthomas]

Originally Posted by jamesbraken

Right click on the my computer and select the manage option then click on the disk management and check it whether it is showing it or not then if not then you must scan your computer with strong updated anti virus and it would visible after scanning, it disappear cause of virus also.

It's solved now .... please read the whole thread, in particular Post #10

[bluefox]

If your portable has an independent power supply, try turning your hard drive on before your computer.