Two monitors from USB C: HP ProBook 450 15.6 inch G9

[MHM4]

I got an HP ProBook 450 15.6 inch G9 Notebook PC. The first day before the Windows updates (windows 10 V 22H2) I was able to use the USB C port to connect to two (Dell) monitors.  After the updates, I can no longer do that, when I plug in the USB C cable, it won't recognize the monitors. I can use the (only) HDMI port to connect to either one of them (one at a time). 

I thought I should play with the display adapter (intel(R) Iris(R) Xe Graphics) drivers, I installed older and newer versions but none of them worked.  

OS:  Microsoft Windows 10 Pro

Processor: 12th Gen Intel(R) Core(TM) i7-1255U, 1700 Mhz, 10 Core(s), 12 Logical Processor(s)

Again, I would like to connect to the two monitors (and I know the machine supports this because I was able to do that the first day). What else should I do?

Thanks in advance.

[MHM4]

OK weird, I did something like "power drain", while the laptop was on and disconnected from the power source, I pushed down the on/off key for about 30 seconds, then I started again. Next, I plugged the USB-C cable with two monitors, and voila! it worked. 

Can someone from the support team explain the appropriate power drain method for HP and why it works?