Custom STM32H743IIK6 Board Flashing Error: No STM32 target found!

[RPanc.1]

I am trying to flash a custom PCB having STM32H743IIK6 MCU using SWD interface. 

I have tried below methods but all are Failing. 

1. Flashing using 'STM32CubeProgrammer' using all 'Mode' and 'Reset Mode' options Failed
2. Flashing using STM32CubeIDE tried using STLINK SWD and J-Link SWD Failed
3. Flashing using STM32 ST-Link Utility Failed.

Below is the Schematic of the programming and power supply section of the MCU.

I have assembled 2 different boards and in all 2 boards, Most of times, I am getting 0V on VCAP pins. but sometimes this VCAP voltage fluctuate around 0.7V to 1.1V.

[RPanc.1 · Accepted solution]

Problem solved!

It was the issue of MCU BGA pad soldering.