No Wi-Fi Adapter found

I am using Manjaro Gnome for more than 2 years now, It’s my favorite distro. My WiFi was working perfectly before but after formatting my laptop and re installing Manjaro Gnome, my WiFi is not working.
It’s showing “No Wi-Fi Adapter found”.
Please any one help me…
I am using-
Dell Inspiron 3442,
RAM: 4gb, Processor: Intel Core i3-4005U CPU @ 1.70GHz x 4
Graphics: Intel HD Graphics 4400 (HSW GT2)
Disk Capacity: 500gb
Gnome Version: 40.1.0 & Windowing System: Wayland

sudo rfkill list

show anything

Hello @Sumita :wink:

What kind chipset is it?

 inxi -Nazy

Maybe you need to install a DKMS?

it’s showing,
0: dell-rbtn: Wireless LAN
Soft blocked: no
Hard blocked: no
3: hci0: Bluetooth
Soft blocked: yes
Hard blocked: no

it’s showing…

Device-1: Broadcom BCM43142 802.11b/g/n
vendor: Dell Wireless 1704 802.11n + BT 4.0 driver: bcma-pci-bridge v: N/A
modules: bcma port: f040 bus-ID: 06:00.0 chip-ID: 14e4:4365 class-ID: 0280
Device-2: Realtek RTL810xE PCI Express Fast Ethernet vendor: Dell
driver: r8169 v: kernel port: e000 bus-ID: 07:00.0 chip-ID: 10ec:8136
class-ID: 0200

Normally you need to install the driver for this card. In mhwd (or Manjaro Settings) there should be a option for installing it. If not try installing it directly:

For kernel 5.10:

pamac install linux510-broadcom-wl

and blacklist all other builtin drivers for Broadcom (what mhwd does additionally)
After a reboot, it should be available

sudo nano /etc/modprobe.d/blacklist.conf

put:

blacklist dell_rbtn

reboot & try to connect.