Try pulling the power cable out of the back for a few minutes as the system still draws power to maintain settings when it is "turned off". This has worked for my friends when they have had display problems. Hopefully it works for you too.Deominator

That didn't work but here's what did:

I noticed that after changing the TV input to dish-TV setting (which was via a different HDMI TV connector) a problem was listed on the screen. The satellite box (dishnetwork) message stated an issue with the HDMI connection and would not display a TV show, only satellite guide info. This lead me to suspect the TV instead of the PS3. So I powered everything down (TV, PS3, satellite box) and then turned off the surge protector. After a minute, I powered everything back on and the PS3, satellite, TV was working as it had been doing the previous day.

I believe that the TV got into a weird state and was unable to perform the standard HDMI handshaking. Thus, a million reboots by the PS3 would have never solved the problem, but a reboot of the HDTV would fix it; as it did. During the many PS3 reboots I frantically performed, the PS3 was very quiet making me think that something was very wrong with the PS3, such as the hdd was bad or the OS was corrupt. But since it was a relatively easy and painless fix I thought I'd put the process up here for anyone else having a similar problem.

Yeah I thought of that too. I checked all my connections a million times it seems and still nothing. The most frustrating part is that it worked FINE yesterday. This morning I go to turn it on and all I get it a black screen with NO sound. I've done the whole hold the power button down for 5-6 seconds a ton and still nothing (even though I figured that wsn't the problem because I'm also NOT getting sound).

I'm wondering if I need to send it in for a new one, although like the other guy I turned in the UPC for the movies. I do have a copy of the UPC somewhere, wonder if that will work.

I'd rather not go through the hastle of taking it back and getting a new one, anyone else having this problem or have had this problem? Help is greatly appreciated.

Edit: I've also had my PS3 for a long time now and been using it on the same TV without changing setting/unplugging anything. It worked fine yesterday and now (after doing nothing) it doesn't.