External Hardrive Wd600u

First, on your Windows PC check if the drive is visible in BIOS and Disk Management. If it is and it appears as Unallocated space then you just have to partition and format it there, and then you can use it in your PC. Here's a KB article showing how to do that:

http://products.wdc.com/support/kb.ashx?id=iP4Ozw

If it doesn't show up in BIOS then try the basic troubleshooting steps:

1. Connect the drive to a different USB port of the computer, and if possible with a different USB cable.

2. If the issue continues, plug it in another computer and see if it will be recognized properly - that's the best way to determine if the problem is with the HDD, or with the PC.

In case it does appear in any of these steps then follow the KB article to partition and format it.

If it doesn't show up after all feel free to contact our support so they can help you further:

http://products.wdc.com/support/kb.ashx?id=5Vvfxl

As for the drivers solution suggested by @jdfitchett, WD drives use the generic drivers of your OS. You can take a look at the few troubleshooting steps in this KB article as well if you want:

http://products.wdc.com/support/kb.ashx?id=tyVFWw

Hope this helps and best of luck, mate!

Cheers! :)

this link will help install drivers for windows vista,7,xp and 10

please let me know if this was helpful