Acer Aspire 5733 won't use Logitech h390's mic, but picks up sound, won't detect voice on any mic.

[RezTien]

Alright, as the title explains, my computer won't use any form of headset's mic, like at all. Not even its own built in mic, please halp, and I know not **** about computers, so if you could like, explain in ******* terms, I would be incredibly grateful. It might help that I'm a computer gamer, so this would be awesome if you guys would help me. Thank you!