TDA2030 strange startup noise problem suppression
The problem is that you haven't got a pull-down resistor on the non-inverting input: -

Transistor amplifiers of this type (and op-amps) need to have their inputs biased correctly and that means adding resistors where appropriate. The inverting input on your schematic is fine because the input is biased by the feedback resistor (R2 in your schematic).
So, because you have a single sided supply, you need to do this: -

You also need to add power supply decoupling capacitors as indicated by C3 and C5 in the diagram at the top of my answer. And, in case you still get some noise, you might need to do this: -

Image from TDA2030 data sheet.