Rep Power: 0

so my car when stopped and on the brakes makes a loud thumping noise sometimes from the front and sometimes from the rear, noise goes away once i start driving.
the noise does however happen sometimes even when the car stopped with no brakes and just the handbrake applied.

what do u guys think it might be? i know i need like NEED new brakes but could it be the caliper? brake booster? or something?

 
Rep Power: 366

disassemble once, inspect, check for loose bolts, frozen sliders.
Then, if needed, buy and replace parts

Asking before even inspecting is not a good approach

 
Rep Power: 0

have'nt had time to check it out its winter in canada and got no garage to do it in so i was asking to see if anyone else had experienced it so i know what to look for.

 
Rep Power: 221

Need to pull the wheels off and inspect, either get a heater and deal (what I usually do), or pay someone

 
Rep Power: 366

if rotors are rusted, they will stick to the pads, especially if parked for some time.
if not rusted, it could be the sliders that are stuck. Disassemble, lube the sliders and test.