So I was playing Street Fighter IV on my 360 when all of a sudden all the colors went weird, so I thought I'd restart the Xbox. But when I did this the sound of the Xbox title screen played out of my speakers but no image appeared on my TV. I have an Xbox 360 Elite and my video runs through HDMI and my speakers plugged into that audio out put thing on the back of the Xbox. I've tried everything to get it to work but nothing has.

Your HDMI cable has probably come dislodged. Just stick it back in there.

I've tried that repeatedly I've even tried it on multiple TV's in my house and it hasn't worked

What brand is your HDMI cable?

it's the one that came with the elite. So it a Microsoft one. 

I just had this problem, and it turns out it was my 360. I don't know the specifics, because I am not sending it back to MS (out of warranty.) Try and check with another cable and see if it is just a faulty cable, and if it's not, it's a 360 problem, I'm afraid.

"I just had this problem, and it turns out it was my 360. I don't know the specifics, because I am not sending it back to MS (out of warranty.) Try and check with another cable and see if it is just a faulty cable, and if it's not, it's a 360 problem, I'm afraid. "

Mine just did the same thing. I had pulled out Oblivion and was trying to get some missing achievements, when the colors went all funky. I exited to the the dashboard and they still looked messed up. Well, I turned the machine off completely, went to bed, and when I tried to turn it on today, the sound comes through just fine but there's no video. And no red lights to indicate a problem.

Oh, and I'm using the Component cables, not the HDMI (I have a circa-2005 manufactured on date)

same thing happened to me.  Your 360's video card just bit the big one.  Either repair it yourself or get Microsoft to do it.  Either way, it's going to cost money to fix unless you're still under that year warentee.

Sounds like a E74 to me, send it to Microsoft, trust me, don't go down the independent repair route, you will regret it.

The video card probably died.

I don't know what just happened to my last post.

but I was saying would it just be better in the long run if i just got a JASPER arcade unit and put my hard drive on it.? 

Good luck with your new unit, too bad about your video card.