74190 counter problem
You cannot predict the initial state of the counter. 

You must make a reset circuit that brings the counter to a known state at powerup. 

Replace U8A with a NOR gate with one pin to an RC reset circuit or you can use a spare OR gate with U8A to make a NOR gate:







simulate this circuit &ndash; Schematic created using CircuitLab

On powerup the capacitor will drag the second input to "1" for a short time forcing a a counter load. This will make the counter start from 5. 

From the additional comment I understand that the technology used is really LS which has an 1 mA input current, I thought it was just the schematic. 

A fix is to use a negative reset like this:







simulate this circuit

R can be higher that 2k2 since the input high current is of uA order and also the capacitor if the reset does not work properly