My controller turns on and it just shows a green circle

this occurs when the xbox is overused..u better give for service if it is under warrenty and if not u can also reach the site to solve it

The half circle light comes up for five reasons. 1) There is a paper jam in the printer.Remove the cartridges and properly check for any big or small piece of paper jam. 2) The other reason for half circle light is there is no paper in the printer.Check if the tray is empty,fill it with papers and then see. 3) The cartridge in the printer is not fitted correctly or cartridge is bit tilted.check the cartridges and reinsert it properly. 4) The other reason for this half circle light is that the cartridge is empty and it needs to be replaced.remove and replace the cartridge. 5) Also try this reset procedure.Remove all the cartridges from the printer.Then turn the printer off by directly unplugging the power cord of printer from wall outlet. Then after one minute reconnect the power cord to wall outlet and turn the printer ON. Then reinsert the cartridges one by one.then check.If still the same problem then follow steps 1 to 4. Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.

If this is for your console:
*Solution* - It means your controller isn't synced with your console. At the top of your controller, there is a little sync button with waves next to it inbetween the two bumpers. Press that button once, then go to your console and press the similar button located on the front of it right next to Memory Slot B. You'll see the green light run circles around the main button for a second until they recognize each other, blink a couple of times and then you'll see the green light in the top left quadrant of the controller and the console.

If this is for the PC:
*Solution* - It could be in relation to a driver issue, power issue or both. First try unplugging any other USB devices you have to your machine besides the 360 controller. The wireless dongle used to connect to the controller uses a lot of onboard power. If unplugging everything but the controller get's the controller to sync, you might have to consider getting an upgraded power supply unit if you have a desktop or just getting a wired controller.

If that doesn't fix it, you can try uninstalling the current controller drivers you have on your system, downloading and installing the new drivers from Microsoft's web-site and try syncing again.

The solution is simple to your silver circle happening every time you click the screen. Go to Start>Control Panel and double click Pen and Input Devices. Click on the second tab in the Pen and Input Devices (Pointer Options) and uncheck all four of those top boxes. Voila! No more silver circles when you click!

If your tablet is acting buggy, try installing the latest driver from the Wacom.com website.

there is a button on the top of the controller.and there is a tiny circle button on the console by the disk thing.press those buttons at the same time and it sould work. OR you sould replace the batteries.

NOT HD: Make sure red goes to red, white on white, and yellow on yellow, also make sure the switch that is on the xbox wire plug says TV not HD.

HD TV: Make sure red on red, white on white, yellow on yellow, blue on blue, green on green, etc. Also make sure the switch that is on the xbox wire plug says HD not TC

unscrew and pull front cover off and make sure the sensor isnt loose or disconnected

You need a new light engine. That's gonna cost you $1200+.

you should press the tiny button on the controller located on the top near the battery bay and hold it. then do the same to the button adjacent to the memory slots on the console.

The xbox sounds like its overheating which is a common problem, ring up microsoft and send it to them for repair or replacement. The xbox 360's have an extended 3 yr guarantee aslong as the xbox have not been tampered with in any way.. i.e opened or modified.