My microphone sometimes work and sometimes not

[idhaini]

When I make a call from my Dell laptop, I always hear the other party but usually he doesn't hear me although sometimes he hears me well..I tried another headphone, it worked normally on my laptop.

 

[AntiZig]

well chances are you have a cheap headset plain sucks, so getting a replacement, something like what you tried and you know works would do the trick.

If not, make sure you plugging your microphone into the designated slot ( you didn't say if it's USB or regular headphone)