Hi I Samsung CLX-3160FN All-In-One Printer and everytime I start it up for printing it makes a loud squeaking noise. What could it be, the printer is about 1yr old

If you look into the paper output of the printer you find a green lever. Pull it to the front. Open scanner lid and check the position of the lever.
Restart printer by switching off and on again.

There is mechanical problem with your printer so that printer need servicing.

you can check if you image unit is properly installed

Usually I've seen that happen when you use generic toners. There are 4 toner clutches down the right side, with the right cover off you can see which clutch is doing the grinding. Many of the generics are overfilled and hard to turn and will make the noise until you loosen them by hand turning them til they loosen up, or just replacing.

You will need a wireless print server. The instructions come with it.

try the transfer belt/roller

Press the "FAX" bottom, press menu, press arrow until you hit "FAX set-up", press OK, press arrow until you hit "sending", press OK, press arrow unti you hit "Send Report", press OK and press arrow to "ON" and press OK and it will saved.

Everytime you faxed something it generate a report.

Hope it will help you.

Hard to tell without hearing it. But, if it is doing it all the time it is turned on but not in use most of the time that would be a fan making the noise. The other suspect would be a fault toner cartridge or the fuser. you may need to have a tech look at this.
Hope that helps...

are black lines appearing on paper after printing from computer or when a fax is sent or recieved or both?

turn off, remove the cartridge and turn back on, do you hear the noise? if no then it's the cartridge

hope this helps