Method 1: So for? Microphone no sound have to first check: wheat is completely good, other machines can not be used; jack there is no wrong plug, and speakers and other equipment is connected to the normal, etc., but also remember to put a check mark in the volume control → Properties → Recording → Microphone below.
Method 2: open the control panel under the sound of the management of audio devices, point recording options → built-in microphone → Properties level options → microphone sound size, adjusted after the good.
Method 3: Open Control Panel → Add New Hardware → Next, after the search is complete, click "No, I have not added this hardware", click Next. In the dialog box that appears, check "Click Finish", shut down the computer, restart to add new hardware. Note that we are talking about shutting down the computer and rebooting, not restarting. Typically, the problem is resolved after a reboot.
Method 4: Tap Volume Settings, Options→Properties→Mixer, select raeltek?HD?audio?input, check all the options, OK, and then check the option for Microphone Volume.
Method 5: Open the Control Panel, find Speech Recognition, find Microphone Settings, and set the first microphone device point to the default value point OK.
Method 6: Tap the keyboard's ?" DEL" key to enter the bios settings, first point "left and right" key to select the horizontal row of the second Advanced "menu" (Advanced Options menu), and then point "up and down" key to select the vertical number of the second "Chipset" (Chip Settings), enter, and then select the vertical number of the second "South "Bridge"? Configuration?(南桥芯片设置),回车,选竖着数第四個?Front?Panel?Select?(选择前置音频模式),回车,你可以看到两个选项?? One is AC97 and the other is HD Audio. Select AC97, enter, and after you select it, you need to tap the F10 key to save the settings, and the system will ask you if you need to save the bios settings, select Y, and then after rebooting, you'll find that your problem has been satisfactorily solved.
Method 7: After checking did not find a problem, in the control panel to open the "sound and audio devices" in the window to find the "voice", and then point "test hardware! "If the system can hear your voice, then set the sound size, and if you can't hear it, then try something else.
Method 8: If you have a virus, you should run an antivirus program to fully kill the virus.
Method 9: Reinstall the sound card driver.