Mini Rambo - Sketch not uploading. Getting error message.

Hi,
marlin code not installing on my Mini Rambo 1.3a board. Getting an error message that 'timeout does not exist or your board not connected'. Even I installed the Rambo USB driver from Ultimachine site then also not happening. Below is the truncated error code due to character restrictions. Full error code is attached (notepad++ file).
Please support.
Thanks,
Gaurav

Arduino: 1.8.1 (Windows 10), TD: 1.36, Board: "Arduino/Genuino Mega or Mega 2560, ATmega2560 (Mega 2560)"


Sketch uses 77436 bytes (30%) of program storage space. Maximum is 253952 bytes.
Global variables use 2955 bytes (36%) of dynamic memory, leaving 5237 bytes for local variables. Maximum is 8192 bytes.
avrdude: ser_open(): can't open device "\\.\COM3": Access is denied.


avrdude: ser_drain(): read error: The handle is invalid.


avrdude: ser_send(): write error: sorry no info avail
avrdude: stk500_send(): failed to send command to serial port
avrdude: ser_recv(): read error: The handle is invalid.


avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: ser_send(): write error: sorry no info avail
avrdude: stk500_send(): failed to send command to serial port
avrdude: ser_recv(): read error: The handle is invalid.


avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: ser_send(): write error: sorry no info avail
avrdude: stk500_send(): failed to send command to serial port
avrdude: ser_recv(): read error: The handle is invalid.


avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: ser_send(): write error: sorry no info avail
the selected serial port avrdude: stk500v2_ReceiveMessage(): timeout
 does not exist or your board is not connected
avrdude: stk500_send(): failed to send command to serial port
avrdude: ser_recv(): read error: The handle is invalid.


avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: ser_send(): write error: sorry no info avail
avrdude: stk500_send(): failed to send command to serial port
avrdude: ser_recv(): read error: The handle is invalid.


avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: ser_send(): write error: sorry no info avail
avrdude: stk500_send(): failed to send command to serial port
avrdude: ser_recv(): read error: The handle is invalid.


avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_getsync(): timeout communicating with programmer

Error_code1.txt (25.6 KB)

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