After Kernel upgrade I can only boot up in rescue mode - Samsung Netbook

Hi,

I have a Debian-based xfce distro with kernel 4.9. A new release with kernel 4.19 was suggested so I upgraded to newer kernel but my system doesn't boot up since then.

I upgraded to kernel 5.4 and I somehow succeeded booting up. when I restart it stucks after I see a small pointer and then empty black screen. In rescue mode it boots up normally.
tried "sudo systemctl status systemd-modules-load.service"
here's the output

Code:$ sudo systemctl status systemd-modules-load.service
a- systemd-modules-load.service - Load Kernel Modules
Loaded: loaded (/lib/systemd/system/systemd-modules-load.service; static; vendor preset: enabled)
Active: active (exited) since Thu 2020-04-09 18:19:02 +03; 8s ago
Docs: man:systemd-modules-load.service(8)
man:modules-load.d(5)
Process: 2100 ExecStart=/lib/systemd/systemd-modules-load (code=exited, status=0/SUCCESS)
Main PID: 2100 (code=exited, status=0/SUCCESS)

Apr 09 18:19:02 pardus systemd[1]: Starting Load Kernel Modules...
Apr 09 18:19:02 pardus systemd-modules-load[2100]: Failed to insert module 'bbswitch': No such device
Apr 09 18:19:02 pardus systemd[1]: Started Load Kernel Modules.I tried checking it with dmesg

Code:$ sudo dmesg | grep bbswitch
[ 13.241537] bbswitch: loading out-of-tree module taints kernel.
[ 13.241697] bbswitch: module verification failed: signature and/or required key missing - tainting kernel
[ 13.242347] bbswitch: version 0.8
[ 13.242436] bbswitch: Found integrated VGA device 0000:00:02.0: \_SB_.PCI0.GFX0
[ 13.242542] bbswitch: No discrete VGA device found
[ 475.430393] bbswitch: version 0.8
[ 475.430416] bbswitch: Found integrated VGA device 0000:00:02.0: \_SB_.PCI0.GFX0
[ 475.430432] bbswitch: No discrete VGA device foundHow can I solve this problem? Please help, thank you.