Virtual routers cuases crash after couple of mins

Aug 3, 2013 at 12:07 AM
Toshiba Satellite L505 Pentium Dual-Core CPU T4400 2.20 GHz (3 gbs of ram)

^^^ Laptop Crashes after a couple of mins of running then freezes the whole computer so the Only thing that works is pushing the power button for a long time.
I use to own a HP Pavilion DM3-1039wm(I still own it :D) and virtual router running flawless :D but R.I.P. laptop(hard drive got a hard hit somehow O.o) and I got the Toshiba
But as I mentioned it makes the laptop freeze after a couple of mins.
Can someone help out?
Thanks :D