I have replaced my ceiling fan in my downstairs bedroom with a regular light fixture. Connected the black with black the white with white. Have another white wire that I capped. The light works fine but my outside and upstairs light won't turn on now and two outlets don't work in my living room. Checked breaker box everything looked fine. Can anyone help not sure what I did wrong.

Hopefully an electrician will chime in here as you're the second person who asked this same question today. Looks like an epidemic! I had the same problem years ago when I decided to replace the switch that operated the fan and the lights in two rooms. In my case, it turned out I'd connected the white ground wire to the white live wire, so there was no circuit. I'd capped the live wire. You might want to see if you did the same thing. If you've broken the circuit by grounding out the wrong wire, then that's going to result in other things on the same circuit not working. Believe me, I know. LOLOL And make sure you actually ground the system with that white ground wire. I didn't know my ceiling fan was "live"--outer casing and all--until an electrician came to install something else in my kitchen and noticed the mistake.

Connect the two white wires and the white wire from the light all together.

"Have another white wire that I capped" did you disconnect this wire when doing the replace? The white is the neutral and Harold is correct. Wire nut the whites together and watch those receptacles come alive