Can you turn of the alarm that goes off when the power goes back on in your house?

Check the battery. When the voltage droops in battery powered devices the current goes up.

when using key it like house alarm you have a few seconds to enter passcode to reset same with car you have a few seconds to enter and put key in ignition and turn on this resets alarm

What does this have to do with PC laptop computers.

If you wire fire alarms together you may not have the coverage you should have. If you have a fire alarm in one part of a house and put another one hooked to it then if a fire puts the power out in that part of the house then you have no protection in the other part if it's on the same circuit. There has to be a different circuit for each alarm.

http://www.informationvine.com/Clifford+alarm+system

Did you open the case on your computer? It may have an open case alarm which is a small switch typically located near the edge of the cover you removed. Make sure the case cover is completely installed, then see if the alarm goes off.

Sounds like interference if its battery opperated try switching of your house electricity to see if it goes away, if it does turn everything back on one at a time until interference comes back, then by process of elimiation find the culprit.
I would be looking at items that use any sort of radio frequency, wireless devices, cell phones and wireless house alarm if you have one.
If monitor uses a power supply try batteries instead to see if that makes any difference, try a different power supply.

The only alarm system I've had is my 12ga with deer slugs.

It shouldn't be too hard to either turn it off, or find the problem power supply. I am thinking the power to the house may have blinked off and on at some point, and the logic of the alarm is freaking out as a result.

Is there a backup battery for the alarm system? If not you could try turning off a circuit breaker at a time until you diagnose which one is powering the alarm system. If you find one that turns the alarm pad off. Leave it off for a few minutes and turn the breaker back on to see if it will reset itself. If the alarm has a battery backup try to remove it and again turn off the circuit breaker. Also search your book for resetting the alarm system.

reset ur phone ringtones

after a power cut alarm goes back to factory setting 0123. you need to use this code to re program alarm