Linus Torvalds introduced the Linux kernel 4.12. You can download the relevant deb packages from HERE and install them. Or just follow the instructions given below that will help you to install a new kernel.
Warning. The Linux kernel is a critical element of the system. To do the upgrade costs when one of your hardware devices is not working properly, and the new kernel may fix this problem. But at the same time installing a new kernel unnecessarily can lead to undesirable regressions, such as: no network connection, no sound or even the inability to boot the system, so install a new kernel on your own risk.
The easiest way to install any kernel – program UKUU
Install UKUU on Linux Mint.
Reminder to users of computers with Nvidia/AMD. Before installing the kernel, it is advisable to switch to the free driver.
If you decide to delete the kernel 4.12,
1. When the computer boots, the GRUB menu, select your old kernel. After booting the system, remove the new kernel by command below
2. Use program UKUU or command: