Over heated and now wont start

Hi i have a 99 audi a6 Quattro 2.8 it sprung a lower rad hose leak on da highway had it towed back and fixed the hose it was sitting for a while because i work 10hr days and have a 9month old baby. But nun the less i got the hose fixed and filled it back up with antifreeze and it still wont start. Turns over belts starts moving and fan. Checked everything that has to do with the fuel system, checked the spark plugs all good. I figure its may be something simply or not but i just cant figure it out any help would help out a lot