Printer not responding, did before though

Hello,
so I've done putting together my printer and before i had an extruder attached, I.ve printed with only a pen attached and everything worked fine.
Now that i Have attached an extruder however, it wont respond. What I have done since the last time that i moved it, I've added another a4988 driver for the extruder, attached all the wires that come with the extruder, and edited the lines in config file:
#define TEMP_SENSOR_0 0 to #define TEMP_SENSOR_0 1
#define TEMP_SENSOR_BED 0 to #define TEMP_SENSOR_BED 1
#define HEATER_0_MINTEMP 5 to #define HEATER_0_MINTEMP 0
#define BED_MINTEMP 5 to #define BED_MINTEMP 0

and now that i connect to a printer via repetier host. and regardless what i do nothing happens, neither home button nor any of the heaters or fan works, all it does is stack up commands in queue in 'manual control' tab

has anyone had this problem?

If host is stacking up commands, then it is not connected to the printer, have you plugged into same usb on the computer as last time.
Check what usb number is defined to arduino in windows device manager/ports. make sure this port number is set in host printer config.

the com port is the same, the baud rate is 250000, but nothing happens,
I reconnected and i get this:

10:40:06.717 : Printer reset detected - initalizing
10:40:06.718 : start
10:40:06.722 : echo:Marlin 1.1.0-RC7
10:40:06.723 : echo: Last Updated: 2016-07-31 12:00 | Author: (none, default config)
10:40:06.724 : Compiled: Jan 16 2017
10:40:06.726 : echo: Free Memory: 5351 PlannerBufferBytes: 1232
10:40:06.731 : echo:Hardcoded Default Settings Loaded
10:40:06.731 : echoteps per unit:
10:40:06.732 : echo: M92 X80.00 Y80.00 Z4000.00 E500.00
10:40:06.735 : echo:Maximum feedrates (mm/s):
10:40:06.735 : echo: M203 X300.00 Y300.00 Z2.00 E25.00
10:40:06.736 : echo:Maximum Acceleration (mm/s2):
10:40:06.739 : echo: M201 X3000 Y3000 Z100 E10000
10:40:06.740 : echo:Accelerations: P=printing, R=retract and T=travel
10:40:06.743 : echo: M204 P3000.00 R3000.00 T3000.00
10:40:06.752 : echo:Advanced variables: S=Min feedrate (mm/s), T=Min travel feedrate (mm/s), B=minimum segment time (ms), X=maximum XY jerk (mm/s), Z=maximum Z jerk (mm/s), E=maximum E jerk (mm/s)
10:40:06.754 : echo: M205 S0.00 T0.00 B20000 X20.00 Z0.40 E5.00
10:40:06.754 : echo:Home offset (mm)
10:40:06.755 : echo: M206 X0.00 Y0.00 Z0.00
10:40:06.755 : echoID settings:
10:40:06.756 : echo: M301 P22.20 I1.08 D114.00
10:40:06.758 : echo:Filament settings: Disabled
10:40:06.759 : echo: M200 D3.00
10:40:06.759 : echo: M200 D0
10:40:07.048 : FIRMWARE_NAME:Marlin 1.1.0-RC7 (Github) SOURCE_CODE_URL:[github.com] PROTOCOL_VERSION:1.0 MACHINE_TYPE:3D Printer EXTRUDER_COUNT:1 UUID:cede2a2f-41a2-4748-9b12-c55c62f367ff
10:40:07.056 : X:0.00 Y:0.00 Z:0.00 E:0.00 Count X: 0 Y:0 Z:0
10:40:07.057 : echoEBUG:INFO,ERRORS
10:40:07.058 : echo:Active Extruder: 0
10:40:07.061 : echoEBUG:INFO,ERRORS
10:40:07.061 : echo:Active Extruder: 0

is something wrong in here?

Have you tried, disconnecting the extruder motor, heater cartage, thermistor and anything else you plugged in after the pen test, and tested the printer?

If the printer still works (and I suspect it will) then you have a short in the wiring that is causing the power to dip.

Plug each item back in one and a time and test the printer function till you find which one is causing the short.

Yeah in another forum i found a suggestion that a extruder Thermistor can sometimes be short if the error says that maximum temperature exceeded, or an open circuit if the minimum temperature reached. so I checked the wires and appearantly the extruder thermistor legs had broken off at some point.

And the reason the printer did not move was because it wasn't plugged to a wall DDD

however the problem was in the thermistor regardless.

So I sort of fixed it, but when i tried turning it on, it heated to the correct temperature, but the stepper could not push the plastic at all, i tried forcing it down by hand and it worked, so i figured ill turn the potentiometer on a4988, but before i could do that the temperature stared dropping, regardless of what i do.

I think I'mm gonna try buying a new thermistor for the extruder first and see if that will do anything, but until then thank you for your help