Ubuntu 15.04 reboots itself on my PC every few hours.
There is no error message on the screen. I downgraded to 14.04 and still get the same problem.
Here is product info
There is no file in /var/crash.
here is grep -i
error syslog
I installed Windows 10 and the computer stopped crashing. I tried turning ACPI off, but then the keyboard worked erratically and video playback did not work.
I have had no problem on my other PC. Only the HP Envy DV7 crashes.