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You cannot have the TV as a wireless monitor for a XP machine.
Your ROKU TV will have HDMI input, but XP dos not have the ability to produce HDMI.
Using the composite input via a converter from the VGA output is possible.
see such a device here. C2G VGA to Composite PC TV Video Adapter
How you connect to your tv is not so much a matter of OS as it is dependent on what type of video connections are available on your laptop whether RGB, S-Video, mini-display port to DVI, or HDMI.
Once the tv is connected then you will need to right click your desktop and choose whether you want the tv to be a clone display (desktop to show on both your laptop screen and the tv, or use the extended desktop setting to have half the screen be on the laptop and the other half to be on flat screen tv.
Time for a trial and error. 1.connect your laptop to a monitor or tv that has a VGA connection.Use a vga cable and connect it to your laptop then to your TV or monitor.If the screen shows display and works on your TV or Monitor ,Then its likely that your Laptop screen is faulty which can be replaced.If it does NOT SHOW on your monitor or TV then it means your GPU is faulty which then you will need to replace the motherboard on your laptop.
Once you're TV is connected to the PC. Go to the display settings and check if the computer detects multiple monitors. Identify the monitors and set your TV as the main monitor. If this a laptop there is also a switch that will let you toggle from the PC display to the TV.
Check the TV output some TV's needs the channel to be set to the output where the PC is connected.
Some says PC some may say VGA or RGB. (depends on the brand of your TV)
Once that is the output channel is set and the cable is connected then you should be able to use your TV as the monitor and watch that movie.
Hope this helps!
To troubleshoot this, you must first start with the obvious. Check your cable connections/try replacing the cable. If this does not work you should then check the color settings in the tv. If that still does not work you can try connecting your laptop to a different monitor/tv. If the color shows up with the same problem, you know the issue is contained within the computer itself. Possibly bad VGA/HDMI Port or color management settings.
Computers have two seperate systems - one for video and one for sound.
The only computer (or laptop) connection that carries both video
and sound is HDMI. If you do not have a HDMI/DVI connector on the back
of your computer, then you will have to use the VGA-composite or
s-video connectors to display your PC's output on an external monitor
like an LCD TV.
On both my HP and Dell laptops the display settings (Start/Control
Panel/Personalize/Display Settings) allow two modes - single or dual
monitor mode. Single monitor mode allows me to switch between any one
of three possible video outputs - VGA-composite, S-Video or laptop
screen, or a split-desktop (display spread over two seperate monitors).
Dual monitor mode allows the same display on any two of three possible
Switching is performed using the fn keys on the keyboard (fn key
plus the F2, F8, etc. function key with the display marking). You guys
use single monitor mode until you figure out what your are doing.
Select VGA-composite or S-Video.
Non-HDMI sound to your TV monitor or sound system must be obtained
from your laptop's Headphone or S/PDIF jacks. Headphone is stereo and
S/PDIF is 5.1 surround sound. Headphone is electrical, but S/PDIF may
be electrical or optical (laser light). You must set the sound jack
that you intend to use as the default on the PC control panel
None of these connectors is two-way in the context of an LCD
monitor - your PC cannot record a TV picture or sound from the external
monitor. To accomplish this you must purchase a video converter box
that converts cable TV or video+sound inputs to USB format usable by
your laptop. Do this and you can turn your laptop into a Tivo
recorder/DVD burner using Beyond TV, Sage TV or a variety of other
Connect your TV to the computer with an S-Video cable. Turn the TV on and choose the AV option (of your TV) to S-Video. It will tell you that there is no signal on the TV.Press the Fn key on the keyboard. While keeping that key pressed, press the F5 key. A small rectangle appears on the screen showing different connection possibilities (LCD, LCD +TV, LCD+CRT, TV only, CRT only). You can cycle through the options by pressing F5 repeatedly. You select the output option (TV + LCD).Release the keys . You will then have your two screens.
Note: I assumed you connect the TV through the S-Video. If your TV can be used as a monitor (it has a VGA adaptor), then with the F5 key select option LCD and CRT
It depends on what kind of TV you have. If you have a flat-panel LCD or plasma TV, it may have a VGA connection already installed. If that is the case, all you need is a standard VGA cable to connect from your notebook to your TV.
If you have a TV without a VGA connection you will need a scan converter to convert your signal from VGA to RCA or composite video signal. These can be purchased online or from electronics stores like Radio Shack. You plug your VGA connection from the computer to the scan converter, then RCA or composite video cables from the converter to the TV.
Hope this helps. Please take a moment to rate this solution. Thanks.