in 30 min laptop shut down after cpu upgrade

[Anand_21]

i have upgraded toshiba satellite c850 with i3 2nd gen processor exactly after 30 min laptop turns off automatically no overheating and no warning

 

[meaga1n]

Did you use thermal paste and reapply the fan properly?

 

[terraco]

i have upgraded toshiba satellite c850 with i3 2nd gen processor exactly after 30 min laptop turns off automatically no overheating and no warning

Did you get to solve the problem yet?
What chipset does your laptop have?

Intel® Anti Theft BIOS recovery Timer Enabled: This timer will enable a 30 minute window to allow a firmware / BIOS reflash before the system is powered down.

I am trying to bypass this problem. I have a toshiba satellite pro c850 but I still didn't get the processor as I read from this failure while upgrading. Mine is PRO so I don't know if the non pro version has the same chipset.