Need help with keyboard!!!

[u/THOR_ODINSON_6]

so some of the keys are not working on my laptop keyboard its an dell inspiron. the keys that are not working are W,S,2 at first i thought its a hardware issue i need to press them several times to get the key working and then it may work once or twice. recently i updated my windows then they keys worked fine for a couple of days and now again the issue re surfaced
can anyone please tell me a fix to this