Sorry, I didn t get about mouse and keyboard, but I used that link and reinstalled the Realtek codeks, however everything stays as it was before.
Computer Management - Device Manager - Sound, Video and Games Controllers - Avance AC97 Audio - Properties tell the next:
Status: Driver is enabled but has not been started.
and Device status: This device is working properly
I don t know is the folowing part relevant. I am not using native speakers( which came with machine when I bought it), I use speakers or head phones which I bought without any soft . For them I use green and pink round slots at the back of the machine. If I want to switch I just switch the pins. It didn't cause the problems for the years.
I have Legacy Audio Drivers listed under Sounds video and games controllers, but no multimedia devices under their properties. I am a bit lost with all those drivers, devices and hardwares.
Might be something wrong with the sound card?