Also, follow up with answers to my questions on the canned air and other battery.
My Lenovo Ideapad Y570 shuts off completely after 10 minutes.
I tried holding down the power button for 15 sec and tried restarting but this did not work.
I removed everything AC power, battery and memory and then replacing them, then it booted fine.
However after 10 minutes again it shuts off.
The heat sink is not very hot nor is the air from the fan, so I don't think its over heating.
I swapped the memory but no difference.
Everything works fine for about 10 minutes then off it goes.
Whether I have the battery in or power only or both.
If I try to turn it back on without removing everything, it powers on with all the panel lights on, but blank screen and no boot.
It will only come on after I remove AC power, battery and memory.
I left it in the BIOS to see if it will still shut off but it froze after 10 minutes without shutting off.