[King Rudi]

#1 Turn off water supply.

#2 If it's a low-flow faucet, while the water supply is still off; take it out of the sink and return that shit to whatever depths of hell you purchased it from. If I turn on the sink because I want water....I want water dammit.

#3 If it isn't low-flow, sometimes when installing a new faucet, debris from the supply line will clog the faucet. Remove the handle from the bonnet nut. Remove the cartridge and flush with water using a different sink....you know, because the water supply to this sink is turned off. In the future, always rinse out your NEW supply lines when installing a new faucet. If you're keeping up, yes; you should have bought new supply lines along with the new faucet. You don't have to, but it is advised. Mostly for this type scenario.

#4 Most likely if your cartridge was clogged, your aerator screen is probably clogged with debris as well. Rinse this guy out in your favorite sink that isn't the one you are currently working on. See above.

#5 I feel like I shouldn't have to say this, but sometimes I do. Ensure all water supply valves are fully opened.

If none of these work, ask your wife for help. She will either fix the problem for you without knowing what she is doing or she'll call another man (most likely her brother, father, step-father or the man she is either sleeping with or is going to sleep with after he fixes your sink for you) to get the job done.

Let me know how this works out.