Rename the Driver.cab file that is in the following folder:
C:\Windows\Driver cache\i386
For example, rename the Driver.cab file as
Driver.old.
Insert the Windows XP CD-ROM into the CD-ROM or DVD-ROM drive.
When the Welcome screen appears, click
Perform additional tasks.
Click Browse this CD, and then double-click the I386 folder.
Click the Driver.cab file, and then on the
Edit menu, click Copy.
In Windows Explorer, open the following folder:
C:\Windows\Driver cache\I386
On the Edit menu, click
Paste to paste the Driver.cab file in the C:\Windows\Driver cache\I386 folder.
Remove the device that you tried to install.
For example, if you received the error when you tried to install a printer, follow these steps to remove the printer:
Click Start, click Control Panel, and then click Printers and Other Hardware.
Click Printers and Faxes (or the icon representing the type of device that you want to remove).
Right-click the printer that you want to remove, click
Delete, and then click Yes to confirm deletion of that printer.
-or-
Use Device Manager to remove the device. For example, if you received the error when you tried to install a modem, follow these steps to remove the modem:
Click Start, right-click My Computer, click Manage, and then click Device Manager.
Expand Modems, select your modem, and then press DELETE. Click Yes to confirm.
Restart the computer. Your new device should be detected and automatically installed.
You don't say which version of Operating system you are using. My thoughts are to first go to "my computer" and see if your drive shows up there. If not, get to disk management and see if it shows up there. The crash possibly could have messed up your external drive, and now it needs to be initialized and/or formatted.
trial versions are free for 1 month
you bought the unit at a sale so if the trial version was installed , the free period is well over so you have to pay or uninstall
next point warranty is from day of sale . not day of manufacture so discuss that with the shop because for them to deny warranty full period means that it is not new but second hand and all you got was the remainder of the warranty period
In other words , you have been had
you can get brand new 1T hard drives for less than $90.00
That sounds to me like bad connectivity between the drive and the USB port. The connection is enough to provide power to the drive but not for it to recognize the chipset controller which translates data from SATA to USB and then out the connection via the cable to your computer. Below are less frequent reasons for it:
1) Drive not formatted or corrupted
2) Drive not initialized
3) Drive has failed (A failed drive can move some of its motors but cannot read the disk)
My suggestion is to get an RMA from WD if your warranty still covers it. If not, you'll need to take apart the enclosure then extract the drive and see if you can connect it to an adapter such as SATA to USB or eSATA if your PC supports it. Just keep in mind that some of these drives especially the USB 3.0 versions do not seem to have the SATA connector but instead the A type connector embedded. If this is the case you're out of luck.
How To Take Apart Western Digital My Book EnclosureHow to disassemble Western Digital My Passport external
Hard drive easilyUSB 3 0 Wikipedia
If it is a matter of just the power supply failing, you can get a replacement. It is possible to remove the HD and place it in a new case with a new power supply, as well. However, if you suddenly smell something burning after that, you are on the trail to adventure. That might be a burnt out diode, easy enough for a PC repair shop to replace. Or, it might be something more serious and you would need an expensive data recover shop to get back your loss. You could call Western Digital customer service and see what they have to offer in terms of a power supply or make use of the following link:
Amazon com 12V AC power adapter for western digital elements WD6400EB035...
It is possible your external drive is formatted using FAT32. You need to need to format it to NTFS. Windows XP caps the file size for transfer and will not move them if they are over 4Gigs if I remember correctly.
Make sure you have saved all of your files onto another drive or onto your computer temporarily before you do the next step. The next step will erase all of the contents of your hard drive and you will not be able to get them back.
Also, before you
Go to My computer and right click on your external drive then click on properties. Look at the File System and if it says FAT32 or anything other than NTFS then you will need to do the next step. Again, backup your external drive contents before anything else.
Go to My Computer, right click on the drive and then format it and make sure you choose file system NTFS. You can also choose the quick option to speed things up. Once complete you will be able to transfer large files to the external drive. Hope this helps. If you need further help, reach me via phone at https://www.6ya.com/expert/hugo_f827544e52871d36
You don't say what Mac OS version you're running or many other details, but try running Disk Utility or Disk First Aid, normally in the Utilities folder, and see if it can repair anything.
It sounds like the drive is failing or has already failed.
PS: That Mac G4 is well past its prime. :-(