External HDD problem in Window7

[wanderer]

Whenever I connect my 320GB Seagate external HDD to my windows 7 machine it connects then disconnects and then reconnects. This process goes on and I am not able to read or write any data on it. Same HDD works fine on my laptop with Vista.
Plz help

[thetechfreak]

you probably have usb port proablem,connect on port on back of cpu

[wanderer]

tried that too..still the same prob..btw if I boot with Hiren's boot cd, I can read and write from external hdd

[arpanmukherjee1]

your mobo cd came with usb 2.0 driver ?

try installing it