Start up issues - key stuck sound?

My Mac Pro keyboard  needed to be cleaned, white keys were dirty so I got an alchohol pad and cleaned the entire keyboard when the unit was off. When I turned the unit on the next day the startup took forever and when I finally got to the last screen with the icons I started hearing the sound which would start when you were holding down a key. If I run my hand across the keyboard it stops and I'm able to run the machine with no problems. I restarted around 8 times after that with the same problem, besides tapping each key once to find the culprit is there any other way to fix this as my keyboard looks great but at what cost.
thanks
RD

Troubleshooting: My computer won't turn on
https://support.apple.com/kb/TS1367
Symptoms
If your Macintosh computer won't turn on, here's how to troubleshoot it. Please keep in mind that although your computer may display similar symptoms that prevent it from showing video, this article discusses what to do if the computer won't turn on, meaning that when you press the power button:
You don't hear a startup chime.
You don't hear any fan or drive noise.
The power button or power indicator doesn't light up at all.
  If your computer doesn't display any video, it may display one or more of these similar symptoms when you press the power button: 
You may hear a startup chime.
You may hear fan or drive noise.
You may see the power button or power indicator light up.
If any of these conditions occurs, see Troubleshooting: My computer has no video instead.

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