xbox flashing red light

[crofty05]

just turned on my xbox after some time now it will stay going for about 20 seconds then a red falshing light is on if i turn of the power it wont power up for about 2 minutes did anone ever see this problem or know what it is thanks

 

[bigwilkey2008]

sounds like you aint got the right firmware for your 360 if its mod