System randomly freezes

[BBmine]

The computer has a Windows 10/Debian Testing dual boot. Windows was last updated a week or 2 ago, and Debian was updated today. The random freezing started about a week ago. The freezing only happens on Debian. When it freezes, everything completely stands still, except the sound, which endlessly repeats the last second. I have to hold down on the power button to turn off the computer.

Here is the system info:

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CPU: Dual Core Intel Core i3-5015U (-MT MCP-)
speed/min/max: 798/500/2000 MHz Kernel: 4.17.0-3-amd64 x86_64 Up: 16m
Mem: 1120.1/3858.5 MiB (29.0%) Storage: 931.51 GiB (7.1% used) Procs: 156
Shell: bash 4.4.23 inxi: 3.0.20

lsbk:

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NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0 931.5G  0 disk 
├─sda1   8:1    0   500M  0 part /boot/efi
├─sda2   8:2    0   128M  0 part 
├─sda3   8:3    0   180G  0 part /windows
├─sda4   8:4    0 734.4G  0 part /
├─sda5   8:5    0   3.9G  0 part [SWAP]
└─sda6   8:6    0  12.1G  0 part 
sr0     11:0    1  1024M  0 rom

[debiman]

what's in the systemd logs?
after it happens, after rebooting, look at

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journalctl -b -0

please share only the relevant parts of the log (timestamp).

[kc1di]

what is the video card? you did not include that in you inxi read out.