inspiron 15 3542 no audio sound headphones and speakers, drivers ok. pls urgent

i had to format my hard disk after having an unmountable disk error, and reinstall win 10

after installation my sound stopped working 

specs win 10, i3, realtek sound

• i installed realtek drivers, switched to generic and back still no sound even tho in playback devices it shows that sound is coming through
• i did a epsa audio test from bios and recieved no sound 
• i opened up the laptop to disconnect and reconnect the speakers but still no sound 
• also my left speaker had stopped working before re installation, and the audio jack has a bit broken off exposing the metal stick(i dont know maybe this is a problem)

pls i'm at my wits end as ive searched for all information and they not working, i would appreciate any information i can get, thanks in advance for any help, its also hard to get help as i live in west africa, also i'm a student can't afford to change laptop over sound