network card getting broken ?

Hi.

So as i am writing this message my network drops all the time and it is causing me issues which i jsut cant handle right now . I checked the router but it shows no problem, i have optic cable connection of 50mbps
Speedtest.net by Ookla - My Results
This is my current speed ( i barelly made it calculate since it dropped connection like 5 times ) . The internet provider says there isnt a problem from their side, the router is up to date , the cable connection isnt broken ( i checked the visible parts, the rest are hidden in plastic "tubes" that are built in the wall ) AND the laptops that are connected wireless have NO issues.

Can i check the network card if its broken , going to be broken or something similar like that because losing connection every 10 seconds and getting it back the next 2 is frustrating .

If you need any more info please ask .
Thank you

EDIT:
my internet provider gave me a hint to try and connect my laptop via the internet cable and turn off wifi on it . There is internet and there has been no signs of problems . So its definitely my PC . What can i do ???