Xbox 360 keeps rebooting

my xbox360 runs great but When I sign in to Xbox live, I hear a click and the entire console will shut down and reboot after a minute. This repeats over and over until I unplug the network cable from the console. Any ideas on what could be causing this?
I spoke with a wannabe techie and he said the console could be bricked due to my kids cheating? Is this normal? I would expect Microsoft to send me a notice or something if that was the case.

:)

 

360 keeps rebooting

Hi! I have got a similar issue, my console repeatedly restarts itself every 30 seconds. When I remove the hard drive it comes up with a xbox live update (I have no room on internal memory for this) but when I have the hard drive attached it does not come
up with update? I have tried reinserting the hard drive, checking all cables and tv.

Please Help!!!??

 

360 keeps rebooting

Hey Jammer! you can confirm this by trying your HDD on another console to see if the same issue pops up. You can also try a different HDD on your console to see if that clears things up. Let us know, thanks!

 

process of elimination...... Pulled of the storage unit.......plugged the network cable in and the console didn't reboot!.......popped back on the storage unit(250g) and it started shutting down and rebooting again every minute or so.......unplugged the
network cable ..........console stopped rebooting.

So I searched the files and deleted old profiles, old games, and tons of stuff no one used anymore.

Reconnected the network cable and the problem has been resolved. I gues there was some bad files or something causing this. Maybe an illegal game one of the kids downloaded who knows? Go figure this ended up being an easy fix! Thanks for all of the help
and suggestions........NOT!!!! At least this is here if anyone else ever has this problem.