my isight camera does not work on my iMac desktop OSX 10.15.2 Catalina
Hi All as title since installing OSX Catalina 10.15.2 my built in isight Camera has stopped working .. if I click on iPhoto the screen pops up but is black and there is no light showing next to the iSight camera .. I've googled for a fix but really dont know anything about a SMC Reset, PRAM/NVRAM, or how to access them on my iMac .. apologies for not being PC savvy but any help to resolve this issue would be welcome .. thanks in advance regards Antz