Hoping some one can help with PC HDMI issue

[John W. Hamm]

I really hope some one can help me I have looked all over the web and found nothing.

I have a Mitsubishi 57733 HDTV 57'' 1080P For almost a year and a half I have been able to connect my PC to my TV using a HDMI cable... I also use this same cable to connect to my Hannspree 22'' HF229 never had a problem

My Hanspree Monitor's resolution is 1680 x 1050 My HDTV is 1920 X 1080
My Graphics card in my PC is a GeForce GTS 250

Long story short I as playing NFS Shift on my PC with it connected to the 57'' HDTV (as I have done forever with no problems) I paused the game and left for a few minutes... when I came back I had a blue screen as though my PC was no longer connected. I can reconnect to my 22'' Hannspree just fine (again using the same HDMI cable) but no matter what I try I can't get the HDTV to work with it any more) my playstation and VCR as well as antenna all work just fine.

any help at all would be appreciated.

Thank you in advance,

John W. Hamm