Bug after update kernel 3.14.62

[Caroline]

Hello, 

Last night I did a fresh install of Peppermint 6 on an old Compact 
Presario, after the install I've ran all the updates including the kernel 
using Synaptic.  After the updates, the laptop shut off by itself while 
watching a youtube video - at the first restart, I got a kernel panic 
error message.  I restarted it again and maybe 10-20 minutes later, it 
shut off again (did that 3-4 times).  I checked the temperature, it was 
ok. So I booted on the previous kernel and it didn't shut off by itself 
this time.  I don't know if it's related but if it is, I would like to 
know what to do.  Should I use the previous version only? 

Thank you very much for all your work

Sincerely

Caroline