hello,

when i plug in my usb powered 1 tb western digital screen goes off, and the light on my monitor starts to flash. system sounds working but i can do nothing about it except for restarting from power button.

when i start my computer with the external plugged it freezes one or two times but it works eventually.

i have some other external hdd (1 tb - plugged and 320 gb - usb powered) and flash disks, but none of them are like that.

i'm using my computer for years, and it started to do that recently. it had a power supply problem 1 or 2 years ago, and i changed it. could it be a power supply issue?

thanks for your helps in advance.