Windows 10: No sound produced, Couldn't connect to WiFi and Not been able to increase and decrease...

I was doing some random thing on my system, just wanted to make the PC more faster. I then launched the window + r and input "%temp%" and press enter and then delete every file in the folder i was directed to and after I input cleanmgr or something then press enter again and delete files there also. After the step I noticed some changes in my system which include not being able to increase or decrease brightness, i cannot connect to WiFi and my PC doesn't produce any sound also the sound icon displayed x in a circle . I tried all i could do but nothing changed.

:)

 

Lumia 650, we couldn´t connect to the update service

Hi,

Have a lumia 650 with Version 1511, OS build 10.0.10586.494 is this the latest version?

When i check for updates i get this: we couldn´t connect to the update service, we`ll try again later..

I have internet connection via WiFi and a microsoft account set up.

 

Volume is automatically increasing or decreasing when my earbuds are connected!!!

When I plug in my earbuds, the volume automatically increases to full volume or decreases until mute. While this happens, I could not increase or decrease the volume either by the volume option on the toolbar, the volume on the keyboard, or the pop-up
volume on the screen. I have to wait at least a minute or two to be able to change the volume, but it reoccurs about 3 minutes later. The sound-ware of the device does not automatically change volume when there are no sound devices connected to the laptop.
From responses to a similar question on other websites, I tried upgrading my laptop speakers to the latest version, but to no avail - the speakers were already up to date. Please provide assistance. Thanks.

 

Sound volume decreases

When I use Music and Video app my sound volume after a while decreases its volume to 0 (to vibration). If I push increase volume sometimes it shows that it constantly decreases value, and after a while I can increase again, in 30s it start decreases again.
What is wrong? Only music and video app is loaded.