Hi, I had a prang with my Tinyhawk and now when I start it only makes the first 3 beeps in the start proceedure.
It looks like the Boot button came apart, could this be the problem?

If you connect via usb does Betaflight detect it?

Frist 3 beeps means that the FC is not receiving power. Perhaps you have a dead 5v regulator.

No its not working in Betaflight

It sounds like you have a dead FC unfortunately. It's likely that the 3.3V regulator and/or MCU got fried. FC failure issues seem to be fairly common with the EMAX TinyHawks. Another member on here (Rob Axel) has replaced the FC's on his with completely different (non EMAX) ones due to all the failures he was getting with the original TinyHawk FC's.

Damn, another dead TinyHawk.. sorry to hear that… but there is several solutions.. but they involve some soldering, and a replacement fc. You can just go back with the Emax aio, it’s fairly simple, but if ur looking at cutting cost, and a little more durable, there is a way.. I have done several threads here and on RDQforum (easier picture uploads)…good luck, keep us posted,.. don’t hesitate to shoot me a PM if u get stuck..
Don’t get frustrated, I promise, it will pay off in the long run…
Btw.. my wife brought home the two NEW tiny hawk IIs from school for repairs… nothing major, just the battery plug separate… This was how I lost a fc last year, a student connected the two leads as the plug seperated, burning his fingers and tossing the fc…most likely from pulling from the wires…