No sound produced, Couldn't connect to WiFi and Not been able to increase and decrease brightness

I

Impulse⚡

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.

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