Hey hope someone can help me out here. I have a xbox modded with the ex 2.2 lite chip with external switch. If I turn my machine on load a game and then switch the chip off, can I then log on safely to Xbox Live

NO.

And a quick search would have answered this for you

sorry mate, I did have a look but obviously not hard enough, do you know of anyway to play back up copies on live then???

Theres No Way To Do It Zero Nada Nope Rien If You Whant To Play Online Try Xlink And You Will Be Able To Play Backup Games In There But Not On Live If You Go On Live With A Backup Game You Will Be Banned From Live