i did not get any vga cable that is too long for wre i need the lcd tv to be.pls how can i do it because i need the tv to be too far from the cpu, it is for school use. so we need the cpu to be in another room.
There are wireless hdmi peripherals out there but none that exceed 30' that I'm aware of and they are not cheap at all. You could easily mount a small ITX pc on the back of your tv , or even an old laptop, and use a wireless connection to remote to the real pc. This would be much cheaper than the wireless hdmi solution but you won't be playing games like this, it'd be pretty much browsing, watching videos.