Reicast Not Working

So i Downloaded Reicast Core and The Bios Files I Tried To Run It Retroarch Closes Opens As Reicst Core Pretty Normal But There Is A Black Screen Then It Closes I Tried Street Fighter Alpha 3 and Sonic Adventure Do you have any ideas to solve this i like to know EDIT:I fixed it

Make sure the bios files are inside a folder named dc inside your RetroArch system directory, also which one of the two reicast cores are you using?

dc boot bin and flash bin

Seems obvious but make sure to read the documentation thoroughly:

i readed that still couldnt fix it