Windows 7: cant connect my tv with my computer to use as monitor

i am trying to connect my tv to my computer to use it as my monitor cause my old one broke and i cant afford another one but my tv is vag and m,y computer is dvi so i bought and adapter and plugged it into the back of my computer and plugged the vga cable into it and then my tv but nothing happens when i put my tv into pc mode please help kinda new at this

Fill out your system specs so we know what hardware you have. Without knowing that, we can't give you any advice.

there i think i put in the right info as i said i am fairly new to this

Your computer supports DVD-D, which is digital only. VGA is analog, so unless you have a digital to analog converter (about $100), then it won't work. What adapter did you buy?

Looking at the specs for that computer,

HP Pavilion p7-1154 Desktop PC Product Specifications HP Pavilion p7-1154 Desktop PC - HP Customer Care (United States - English)

the two DVI ports are DVI-D, which is digital only and won't work with w DVI-VGA adapter. For it to work with the adapter at least one of the DVI ports would have to be DVI-I, which supports both analogue (VGA) and digital (DVI).

Unfortunately what this means is that what you want to do won't work with what you have, and leaves you with basically three choices,

1. A new monitor.

2. A cheap video card that will allow it.

3. Look for a DVI-VGA converter, which is not the same as the adapter that you bought as it converts the digital video signal to analogue; where the adapter just pass the analogue signal through with no conversion.