Have done that before but done it once again. PFA detailed reports for diagnosis. The goal is to avoid reset or restore windows. 

Adding Recording troubleshooting diagnosis report as well. Need to state that under settings > sound > test your microphone tab with the mic graphic icon and a status bar besides it which is active and live based on the noises being picked up actively by the mic under 100% mic volume and full mic boost slider, the blue active bar is flicker only up to say 1 percent if we consider the whole status bar as 100% but if I even just as much even simply slide my index finger over the mic hole the blue bar starts to play by jumping forward and backward and if I tap a bit hard then the blue line goes up to full 100 percent of the status bar and comes back, as I also stated earlier, I tried putting a flat ended sim ejector tool gently inside the mic hole to remove any possible grime and have even blown in to it strongly but no use. In mic properties, the default format is grayed out at 2 channel, 16 bit, 48000 Hz  (DVD Quality). Had turned off both tabs under Exclusive mode but when I clicked Restore defaults, both tabs are selected as active again. Disable all sound effects is selected. Listen to this device under listen tab is not selected. And in set up mic where it asks me to read a line, sitting right in front in folded arms distance, the mic does not pick up my voice but if I go right on top of it or tap it, slider moves up to yelloe,red and says mic is set. I am thinking this may not be any software issue (I may be wrong) but if it were a hardware issue then maybe it would not have worked at all but the real issue is extremely low mic sensitivity which was not the case earlier and have never caused any physcial damage to the machine. Have just about opened up part tab for access to HDD bay and RAM slot, that's about it. Perplexed and troubled as I really like dictating in Word documents. Using headset I have to manage but would like to restore sensitivity of my built in mic as before. That audio services not responding as per report is a thing and I have executed first few steps of checking on services but has not worked out. Don't know if DFX sound boosting software (which is pretty amazing and much required for this tiny output on the speakers laptop originally) is causing any issue in Mic? While checking about Realtek High Definition Audio snap in console got added in Event Viewer now and no report under that. Will follow further steps as are advised.