Dell :: E1705 Sound And Wireless Cards

I have an issue, as some might have read with my wireless NIC that might be faulty. I had a old wireless card from my i9300 somewhere,

but I can't seem to locate it. What is the best wireless card I can buy for this laptop? I know back in the day it was the Atheros chipset that was the good one for the i9300. Is it still the same with the e1705s? If so, what was the exact chip?

My sound does NOT work with the internal built in speakers. It only works if I plug in head phones and/or use external speakers.

I'm thinking a connection may have come loose some where, so the laptop always thinks that some sort of headset/speaker is plugged into the laptop. With that being said .....