Hi, I did some more research and it appears your computer has the ATI Radeon HD 4200 onboard video, so look for a menu item along the lines of "ATI Catalyst Control Panel." This may be found either by right clicking anywhere on the desktop or in the control panel.
I have an HP p7-1020 running Windows 7, 64 bit, and a Viore LED24VF60 TV. I can connect the TV using the analog VGA connections available on both the PC and TV. This works OK at a resolution of 1920x1080.
I tried using the DVI connection on the PC, a DVI to HDMI adapter and an HDMI cable to the TV. This works except the picture is too big for the screen. The Start Menu and the Date and Time are not visible even though the PC resolution is set to 1920x1080.
Is this typical? Do I need some special driver? (I checked the Viore web site but couldn't find any answer.)