I use the core STM32G431KBT6 the 10v power supply via Vin I want to monitor a variable via STm Studio, but when I insert the USB into the pc the variables are reset

[Mbert.1]

hi, Reading the UM2397 manual on page 12 chapter "Power supply" describes the possibility of powering the core through Vin in a voltage range of 7V-12V, I power it at 10v (the power supply can supply 500mA sufficient current for a core). The card then turns on and works, I need to read some variables, after a few minutes from switching on then via the USB I connect to the card AND WHEN I DO THIS THE VARIABLES ARE RESET (this is not a power problem to be of course I monitored the Vdd voltage of the µ through an oscilloscope, the power supply is constant at + 3.3V). I monitored with osilloscope so the Nrst signal when I insert the USB into the PC someone sends a reset signal. Thinking it was ST-Link I tried to remove the resistor R4 (attached diagram), (to remove any connection between µ and ST-LINK) but nothing has changed, when I insert the USB into the computer the variables are reset. SOMEONE KNOWS HOW TO PREVENT THIS FROM HAPPENING?

[Tesla DeLorean]

https://community.st.com/s/question/0D53W00000QsC8ASAV/hi-i-use-the-coreg431kbt6-which-i-feed-at-10-volts-between-the-vin-pin-and-the-gnd-i-would-need-to-connect-with-the-usb-via-stm-studio-to-monitor-some-variables-but-when-i-do-the-card-is-reset-is-there-any-way-to-avoid-this-reset

[Mbert.1]

hi, clive1 thanks for the reply!

The link you sent reports the question I previously asked, but since it is not easy to understand, I wanted to rewrite it.