Rep Power: 0

2007 Civic Si Coupe. 6 speed manual trans.
Rebuilt the 6 speed K series trans. Was moving the back and forth about 40 feet. Pulled on the street and will not move. No drive to the wheels. Can shift into in any gear without pressing the clutch. Can push/move by hand the car while in 1st gear. No grinding except reverse.
Replaced
Synchros
Bearings
4th gear set
2-3 gear hub
Seals
Welded/filed the wear spots on the shift forks.
Prior owner ran trans dry. 198000 miles before rebuild. Was driveable before tear down but had noise in 4th and popped out of 5th.

 
Rep Power: 367

2007 is not a 10th gen, moved to correct section.
Did an axle pop out?

 
Rep Power: 224

My first guess would be popped out axle as well.

 
Rep Power: 0

and just how do you tell if there poped out whats the sign

 
Rep Power: 126

One sign is that when the car is in gear and the clutch is engaged, the car will not move, but this can indicate a few other things as well.

You'll have to inspect. Remove the hub assembly and see if one of the axles have popped out. There are lots of YouTube videos that show how to access.

 
Rep Power: 367

shove it all the way to the hilt