Good Day All- I've read multiple posts about the Bluetooth issue on a older iMac and I cant seem to resolve my issue. I have a iMac that doesn't show the Bluetooth module at all. I restored the iMac to factory setting and still doesn't help. Additionally I am using a wired keyboard and mouse and the system is freezing up, lagging and then goes back to normal. Keeps cycling through this lag issue. Can anyone suggest what else I can do to resolve this matter?