I installed an x-ecuter modchip into someone's xbox yesterday, but when i tried to boot it up it flicked on and off, then it beeped. Nothing ever came up on the screen like it usually does when it says the system needs repair. The dvd thing was plugged in, and it beeped when it wouldn't start, i've never installed a mod into a system with the dvd kit, so i don't know if that could've been the prob. Are there any suggestions?