12 hr digital clock with an alarm

[Sangharsh Sharma]

Hello everyone. I've been trying to design a 12 hr format digital clock with AM/PM and an alarm setting. The problem that I always encounter is that the count always starts from random values. And, it continues to do so. What should I do so that when I connect the power supply it starts from 00:00:00? Also, I've used two push buttons to increase count of minute and hour. Sometimes, the circuit works and it doesn't. The count gets all random in the hour clock all of a sudden. I've got to demonstrate this project in 2 days. What do I do? I haven't been able to diagnose the error.
I've used 7490, 7447 ICs. For the alarm, I've used DIP switches and 7485 ICs. I've attached an image below. This is how it starts when I give the power supply.

[NivagSwerdna]

Hold reset on the counters for a while at start-up.  Traditionally a 555 timer would be used for this purpose

[JagV12]

That large screen capture of your screen displaying a picture of the breadboard assembly is pure waste. We believe you.

Pin 2 & 3 of every 7490 counter should be pulled high for a few ms at startup (NE555 or equivalent or capacitor (or reset button) connected to V+ rail with resistor to GND) while pin 6 or 7 (or both) is (are) held low all the time.

By the way, real AM/PM clock start at 12:00 and end at 11:59 as per the big mess endianness ... (and I'm sure you can do that !)