Crashing problem

I have Lenovo V15 G4 IRU, for a year, and i played music with my Numark Party Mix II loads of times, but when i had a pause of 2 months, i couldnt get controller conected and my serato is crashing quite often, or just track and music stops but everything else on aplication is working,

i instaled newest serato dj lite version few days ago and now i wanted to practise little bit, but these problems came...

I have a gig for 3 weeks. I need help!