Can't connect to xbox live, sign in, nor download games when my hard drive is plugged in

My xbox works fine, but i've been having this problem that when i plug my adata 2 tb hard drive my xbox doesn't want to log me into my account, the games download at 500 kb when my internet speed is 20 mb and doesn't show me my ready to install games and
doesn't connect to xbox live, but when i disconnect my hard drive, everything goes back to normal. Please help, been having this problem for a while...

:)

 

More than just a gaming console

Hi all, new to forum, need to ask about external hard drives. We have the slim 360 250gb model. Now say I am up to about level 5 in a game and I want to go to a mates place and he has the same game.

Will any external hard drive be able to be connected to the USB port on the back of my Xbox and the my profile or game level downloaded to the drive, then I can just take the drive to avmates place, plug in and play when he puts the game disk in. Will i still be on the same level and then when I return home, can I download the level I amat from my mates onto my hard drive.....

If so what external hard drive would be the best and if not what do you recommend.

Cheers

 

Please Help

I can't connect to XBOX live. I removed my hard drive from my original xbox 360 and attached it to my friends and at first I was able to connect to Xbox live and today I can't, but when the hard drive is attached to my xbox 360 I have no problem connecting
to Xbox live. 80151909 is what comes up.