when i fly my quad it goes in one direction without any throttle movement so i take out rotor and then instal it again the rotor some time it goes fly otherwise rotors are rotating but my quad did not lift up. sorry for bad english

Try trimming.

there are two types propellers (you call it rotors ) in quadcopter, clockwise spinning and anti clockwise spinning. why your quad doesn't lift is because you has not correctly put propellers.
but if it lifts, and is moving to one direction, that is the correct mouning of props, But then there can be many reasons for such a behavior. for helping you out I need more information :
which is your flight controller ?
if you can pls post a close up clear pic of your quad (top view).

The quad is having its own flight controller.It a micro integrated quadcopter.

sorry, u207???
oh , it's a mini quad - well check how you mount props, and trim the channel .

thanks sooraj and kiran i will check it

i check all trims but it is not working

Was it flying well earlier.

Repeated post removed.

Well same thing happened to me, will be posting a.video soon of how it can be fixed. It may or may not work.

@shadowstriker,
Try this:
1. Move left stick to top after switching on
2. After beep move it to bottom
3. After beep, move both sticks to the bottom left hand corner for one or two seconds till lights stop flashing.

This solved my problems. Hope it solves yours.

Hi shadowstriker,

Make sure that quad is on level surface and the battery connection is not touching the ground.

Then you follow steps mentioned by kk iyer sir, and this should definately fix the issue.

Also ensure that you install correct prop on each motor, look at some pics online to get an idea. As much as I know the prop should be identical diagnaly but can be of diff color.

You can call me if you need any help 09811171361

@ rckiran= Yes it was flying well earlier. Thanks kkIyer sir and hellyflyer i will also chech it