There is no cold water coming out of the restroom sink. It comes out fine from the shower. I removed the line from the sink and nothing came out. I had previously removed the cold water faucet and everything looked fine. I have figured out that it isn't the faucet on the sink. What else can I do to figure it out?

So you have two faucets. Correct? When you had the cold water faucet off did you check the supply to seem if you had pressure in the line? Back to you, Tom