Cannot get stm32 nucleo board to work again after system format

[KMINH.1]

I am using stm32L496zg nucleo board. It got started and worked well. But after I formatted my system, the latop does not recognize it; USB Device not recognized. The last USB device you connected to this computer malfunctioned. Windows does not recognize it. I tried installing drivers of st link again, but still its not recognized. 

  

 

Can anyone plz advice me, whether the board's working or it can be resolved with drivers? 
Thanks in advance

 

[AScha.3]

> But after I formatted my system

what did you format exactly ?

[KMINH.1]

The laptop I mean. But I checked the stm nucleo board on another laptop too, but same response, USB device not recognized.

[AScha.3]

try other cables...

+

check power supply on board ( i see no power led ...LD6 green )

 

[KDJEM.1]

Hello @KMINH.1 ,

Could you please check Jumpers, for that I advise you to refer to UM2179 and precisely section 5.4 Embedded ST-LINK/V2-1.

May this FAQ How to solve debugger connection issues - STMicroelectronics Community will help you.

Thank you.

Kaouthar

[KMINH.1]

Power is ok at input, but does not appear at any of the power supply points. 
Also, reinstalled st link v2 program as well as programmer.
Will try to disconnect embedded st link(thru jumpers) & and connect external st link v2 usb .

[QSHAO.1]

it's normal that no power on the board if STLINKV2 is not work well. As a power switch controlled by STLINKV2 embedded if OFF by default. if your board is not work also with another PC (it should work well before with STLINKV2?), I suggest you to upgrade STLINKV2 FW and try again.  

[Pavel A.]

@KMINH.1 What exactly shows the device manager? You don't need to upgrade the firmware.

 

[KMINH.1]

Hi @Pavel A. 

      I am testing in 2 ways,

1. With in built stLink, to which laptop does not recognize the USB.

2. With external ST Link V2 USB dongle. 

                  The device manager shows this for 2nd approach;

                   But, stLink utility sw responds with this; cannot connect to target.

Thanks

 

[KMINH.1]

Is it possible to interface nucleo board with external st link, when it has inbuilt st link?
Anyone plz advice.
Also, I am trying to connect same thru st cube programmer.

[KMINH.1]

@QSHAO.1  Is st cube programmer licensed?  Is it required to be purchased before usage?

[MM..1]

NO isnt licensed go back to start. You write reinstall windows = your windows miss somethink, sometimes i see trouble with missed VCRedist right version installed, try install too older ST Link utility...

For your Q can connect external stlink = yes ofcourse, you maybe see on nucleo precut part top side on your image. You can cut this onboard stlink completely... Too if your stlink on nucleo isnt detected maybe you reconnect jumpers to fail config or kill stlink ... or full board.

[KMINH.1]

Thanks @MM..1  for quick answer. 
The microcontroller side of the board looks ok. But, STLink part doesn't seem to get detected. 

However, when I connect external StLink v2 clone, it doesn't get detected by st link utility sw. 
Attaching image:

If this setup works at least, its enough for me to get started.
Can u check where it could go wrong?
Thanks

[Pavel A.]

Try another computer. And another USB cable.