I am trying to connect my Dell Inspiron 580S desktop computer to my AOC Envision LCD HDTV to watch online videos and movies. I tried using a new 25 foot HDMI cable, and hooked one into the TV's HDMI plug and the other end into the HDMI port on the back of the computer. With the computer turned off, I changed the TV input to PC and then turned on the computer thinking it would recognize the TV, but nothing happened. Then, I tried it again with the TV input on HDMI, and that did not work either. I don't know if this means I might need a "dedicated" video card. Because my computer by itself has very good video and I could watch on the computer (but don't want to), I did not anticipate needing a new video card just to enable my TV. Of course, assuming there is an inexpensive way to accomplish this, I also need the ability to keep my computer and monitor connections intact, with the ability to watch on the TV when I want. I don't know any of the options. I have not changed any of my computer's settings yet, and maybe that is necessary.
Is there a way to do this easily and without spending too much? If I do need a new video card, what exactly would I need to shop for?
Here is some of the basics about my computer (from the original packing slip):
Intel Core i3-540 processor (4MB Cache, 3.06 GHz)
4GB DDR3 SDRAM at 1066MHz-4X1GB
NVDIA D11M0-30 NV G310 (512MB)
640GB Serial ATA 2 Hard Drive 7200 RPM
Windows 7 Pro (64 bit)
Cyberlink Power DVD 8.3 Playback
Dell Software Roxio 1.0
Dell 19 in 1 Media Card Reader
This may be enough for you to evaulate, but I can also do a Belarc profile or something else you might need. I would greatly appreciate some guidance and information. I have gotten very, very frustrated when I attempt to Google this issue, and have not gotten anything solid to go on.