Is it ok

[dakshit]

I have an Intel core i3-M330 2.13GHz
4gb ram
Gtx 1050
Seagate HDD 250gb & 1TB Toshiba
extranal HDD.
When I play watch dog from internal HDD it lags and after 5 min my PC shut down

 

[clutchc]

What is the manufacturer and model no. of your PSU?

 

[dudio]

What is the manufacturer and model no. of your PSU?

He has an "i3-M330". I think that's a laptop.
I would try to monitor system temperatures. See if HWInfo (free and good) works on that
and if temps are fine, I'd try to upgrade/add more RAM if possible.

 

[clutchc]

Thanks, dudio. Speed reading kills...