u/Pure-Tomorrow7336

So i’ve had this passat b5.5 for atleast six months it now has 400k km. I had a turbo leak and it’s been awhile i finally fixed it two days ago and now the car doesn’t start it was running well the first few hours and then i heard a metallic grinding noise and all of a sudden the car doesn’t start anymore… Does anyone have any idea of what it could be ? It’s the BHW engine