Mycgs 255 forced reset / lost manual control / heartbeat lost

what is wrong with my drone? it only works for 2 to 5 seconds then errors like mycgs 255 forced reset / lost manual control / heartbeat lost come up. what could be the problem? please help ASAP

Hi @jesselat -
Often that message is associated with a poor communications link to the vehicle - are you using WiFi or a FXTI tether interface? Have you tried connecting with a different computer?