Xbox turns off and on repeatedly after flash

[garysa34]

Hi, this is following on from my previous thread http://team-xecuter.com/forums/showthread.php/133880-Liteon-Dg-16D2S-02510C-(74850C)-DVD-Key-Not-Found
Now when I start up the xbox it turn off and on repeatedly.
Some History
Box is Falcon which had dash 8955, I got the dummy.bin file then updated it to 16202.
I then flashed to LT+ 025V3.0, worked fine.
I then installed xdrive and xfan, worked fine
I then upgraded my hdd to 320 form 20.
So I returned drive to stock and update 320hdd to transfer game saves and profiles, still fine.
Then reloaded LT+ and that's when the xbox started turning on and off in startup screen!!!
In JF I noticed that it said (dvd key: not found) in drive properties, otherwise everything else
looks fine.
I am using a x360usb pro 2 connected to my xdrive.
If I disconnect xdrive the xbox starts up fine.
Any help much appreciated,Thanks

 

[Martin C]

"If I disconnect xdrive the xbox starts up fine."

I believe you've found the problem then.

I would check all wiring/cabling for the xdrive.

 

[garysa34]

"If I disconnect xdrive the xbox starts up fine."

I believe you've found the problem then.

I would check all wiring/cabling for the xdrive.

Checked all connections and colour coding all seems fine, I will strip out xfan and reinstall drive and let you know.
This was the first time I had updated the firmware using the xdrive attached to the usb pro 2.
It had all worked fine up until now but I had only had it about a week.

 

[garysa34]

Yep, xbox boots up fine now I have returned dvd drive to xbox original connections. Is it easy to fault find the xdrive or should I just talk to supplier since I have only had the xdrive for just over a week?