Hello brahma !
I downloaded the linux515 iso as you suggest here : Cannot boot from live USB - #13 by brahma
I can boot to this version 
pacman-mirrors -f 5 && pacman -Syyu works without error.
For the command mhwd-kernel -li && mhwd -l -li :
[manjaro /]# mhwd-kernel -li && mhwd -l -li
Currently running: 5.15.85-1-MANJARO (linux515)
The following kernels are installed in your system:
* linux515
* linux60
* linux61
> Installed PCI configs:
--------------------------------------------------------------------------------
NAME VERSION FREEDRIVER TYPE
--------------------------------------------------------------------------------
video-linux 2018.05.04 true PCI
Warning: No installed USB configs!
> 0000:02:00.0 (0200:10ec:8168) Network controller Realtek Semiconductor Co., Ltd.:
--------------------------------------------------------------------------------
NAME VERSION FREEDRIVER TYPE
--------------------------------------------------------------------------------
network-r8168 2016.04.20 true PCI
> 0000:05:00.0 (0300:1002:15d8) Display controller ATI Technologies Inc:
--------------------------------------------------------------------------------
NAME VERSION FREEDRIVER TYPE
--------------------------------------------------------------------------------
video-linux 2018.05.04 true PCI
video-modesetting 2020.01.13 true PCI
video-vesa 2017.03.12 true PCI
For the command journalctl -b-1 -p4 --no-pager :
[manjaro /]# journalctl -b-1 -p4 --no-pager
Jan 19 18:33:56 xxx-hplaptop kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.GPP2.BCM5], AE_NOT_FOUND (20220331/dswload2-162)
Jan 19 18:33:56 xxx-hplaptop kernel: ACPI Error: AE_NOT_FOUND, During name lookup/catalog (20220331/psobject-220)
Jan 19 18:33:56 xxx-hplaptop kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.GPP1.DEV0], AE_NOT_FOUND (20220331/dswload2-162)
Jan 19 18:33:56 xxx-hplaptop kernel: ACPI Error: AE_NOT_FOUND, During name lookup/catalog (20220331/psobject-220)
Jan 19 18:33:56 xxx-hplaptop kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.WLBU._STA.WLVD], AE_NOT_FOUND (20220331/psargs-330)
Jan 19 18:33:56 xxx-hplaptop kernel: ACPI Error: Aborting method \_SB.WLBU._STA due to previous error (AE_NOT_FOUND) (20220331/psparse-529)
Jan 19 18:33:56 xxx-hplaptop kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.WLBU._STA.WLVD], AE_NOT_FOUND (20220331/psargs-330)
Jan 19 18:33:56 xxx-hplaptop kernel: ACPI Error: Aborting method \_SB.WLBU._STA due to previous error (AE_NOT_FOUND) (20220331/psparse-529)
Jan 19 18:33:56 xxx-hplaptop kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.WLBU._STA.WLVD], AE_NOT_FOUND (20220331/psargs-330)
Jan 19 18:33:56 xxx-hplaptop kernel: ACPI Error: Aborting method \_SB.WLBU._STA due to previous error (AE_NOT_FOUND) (20220331/psparse-529)
Jan 19 18:33:56 xxx-hplaptop kernel: pci 0000:00:00.2: can't derive routing for PCI INT A
Jan 19 18:33:56 xxx-hplaptop kernel: pci 0000:00:00.2: PCI INT A: not connected