H7 something wrong with COM port

OpenMV Products
1

Suddenly IDE stoped to recognise H7 COM port.
Also it could not reprogramm H7 via DFU.
H7 itself works fine: blue led blinks and virtual drive OK.
COM port does not opened in serial terminal, though in Device Manager displayed as normal.
If I try to sniff it via Tibbo IO Ninja, I got error:
Cannot start capture: The semaphore timeout period has expired.
DFU programming works under STM32CubeProgrammer.

Something wrong in hardware?

2

It is not hardware, because it works fine on another PC and
virtual drive works also via USB.

Something wrong with Windows driver.
I deleted COM port, upgraded via zadig to USB Serial CDC.
Nothing helped. Other OpenMV camers recognized fine.
Only one goddamn port.

3

It was fcking Eltima USB to Ethernet Connector Service

4

Glad to hear you got it working.