My computer will not recognize my external hard drive what do i do?

Windows 7 does not recognize SimpleTech 250GB external USB drive ...

answers.microsoft.com/...does-not-recognize-simpletech-250gb/f7ceccd0...

Just bought a new computer, running Win 7. Drive worked fine on Win XP. ... Windows 7 does not recognize SimpleTech 250GB external USB drive ... I find it hard to believe that a external USB 2.0 drive can't work with Win 7. There must be ...

SimpleTech dvi hdmi pc Hard Drives Questions & Answers ...

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Question about SimpleDrive 160 GB External USB 2.0 Hard Drive ... Question about250GB USB2.0 7200 RPM External 250 GB IDE Hard Drive ... my PC does not recognize the external drive 96300-40001-001 Driver Problem: Check whether ..

Probably, the new operating system cannot recognize your Seagate external hard drive. You can connect the Seagate external hard drive to another computer to copy data to another device. If the problem still exists, you might need to perform data recovery. You can free download the data recovery software: http://www.icare-recovery.com/seagate-recovery/seagate-external-cannot-be-recognized.html

Connect it to a different computer. If it is not recognized, then it has a problem.
If it is recognized, then your computer has a problem recognizing it.

> possibility that the HDD is already defective

Check Following Instructions:
1. Check your USB cable properly connected to the computer.
2. Go to My computer - right click on property - Hardware - Devices Manager - in below - USB Mass storage device - right click on this - and Uninstall - then again right click - click on Scan - it should be reload your USB drivers
your External Hard Drive will be detected

did your computer device manager recognized your external drive? did disk management recognized you external drive? let me know.

please check if it is a new external drive.
If it is new external drive, please format.
Note: all of the data would be lost on it.
How to format a newly brough hard drive:
http://www.xpmaximized.com/archives/xp-usb-hard-drive-format-.html

Can it work in another port or another computer?Try these option if all fails maybe the device is bad.

check if your external hdd connect to the pc.. cables is important..

First I had to reseat one of the drives which had worked loose and become unseated during shipping. Then I had to format the hard drive and finally I had a 1TB external hard drive I could use. The light is still red.