Solved! mic volume only goes to 70 in windows 10.

Solution
Are you sure that the mic that the system is being used is the headset mic and not the laptops mic? I would check that part first, as that will give you low sound. If it is in fact using the headset mic, next try the headset in a different device and see if the problem persists. If it doesn't, then the laptops 3.5mm port may be the problem. If it does persist, then the mic is the likely issue.
Are you sure that the mic that the system is being used is the headset mic and not the laptops mic? I would check that part first, as that will give you low sound. If it is in fact using the headset mic, next try the headset in a different device and see if the problem persists. If it doesn't, then the laptops 3.5mm port may be the problem. If it does persist, then the mic is the likely issue.
 
Solution