Node.js command prompt output response disappear/ blink

vvvv

windows 10

hello i am very new to node.

so: soddenly i can not see the answer when commanding on node...

for example: node -v.... a black window will appear and disappear... that's all..   

how can i see the results? it used to work fine be for... 

only when i try yarn start... the new black window stay..

same behavior with vscoded terminal.. 

thanks

mesverrum

Solarwind npm stands for network performance monitor, this forum has nothing to do with node.js. Totally different stuff.