WiFi was working fine and after restart Broadcom option in additional driver also disappeared and also enable WiFi option. Ethernet is working fine. I tried this link
and still no progress
all information in this link of my laptop
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Please [edit] your question and add output of `lspci -knn | grep Net -A3` terminal command. – Pilot6 Apr 22 '17 at 10:22
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@Pilot6 it doesnot show any thing – Rashim Catalan Dhaubanjar Apr 22 '17 at 12:25
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I do not believe. Do not type it, copy and paste. – Pilot6 Apr 22 '17 at 12:27
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yes copy and paste, that's what i did – Rashim Catalan Dhaubanjar Apr 22 '17 at 12:28
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Listen, your script that you posted in your questions shows that there is `Network controller [0280]: Broadcom Limited BCM43142 802.11b/g/n [14e4:4365] (rev 01)`. I just asked to give 1 more line of that record. This means that the script is not from your comp, or you do some error with the command. – Pilot6 Apr 22 '17 at 12:31
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http://paste.ubuntu.com/24433161/ this line – Rashim Catalan Dhaubanjar Apr 22 '17 at 12:34
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The controller disappeared. It is disabled in BIOS or broken. – Pilot6 Apr 22 '17 at 12:35
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I followed link from here https://askubuntu.com/questions/425155/my-wireless-wifi-connection-does-not-work-what-information-is-needed-to-diagnos so what does it mean? I hava disabled safe boot in bios – Rashim Catalan Dhaubanjar Apr 22 '17 at 12:38
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Check if wireless is enabled in BIOS. – Pilot6 Apr 22 '17 at 12:40
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there is no such option in bios. – Rashim Catalan Dhaubanjar Apr 22 '17 at 12:43
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It should be there, may be called differently. Otherwise the adapter is just broken. – Pilot6 Apr 22 '17 at 12:44
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there is one called Internal Network Adapter Boot . is it that? – Rashim Catalan Dhaubanjar Apr 22 '17 at 12:45
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for two days after booting , wifi was working fine then next day gone. I tried ndiswapper but nothing. – Rashim Catalan Dhaubanjar Apr 22 '17 at 12:46
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Let us [continue this discussion in chat](http://chat.stackexchange.com/rooms/57536/discussion-between-pilot6-and-rashim-catalan-dhaubanjar). – Pilot6 Apr 22 '17 at 12:50