After about 4 hours of being online. My internet wont display, I have a connection it goes this page can't be displayed and i have to restart my laptop. I havent installed anything.
You should fill out system specs if you want help, but try this for now. Run each stick separately for 6 passes. Then take a good stick to test each socket. Guide to using Memtest86+ - Geeks to Go!
Try what richc46 said. The famous Firefox memory leak may be maxing out your RAM. If you've got a bad stick or two in there, once it tops out - kaboom.
My Computer
Computer Manufacturer/Model Number
Self
OS
Main - Windows 7 Pro SP1 64-Bit; 2nd - Windows Server 2008 R2
CPU
Main - Core i7 2600K; 2nd - Core i7 920
Motherboard
Main - Asus P8Z68-V Pro/Gen3; 2nd - Gigabyte GA-EX58-UDR3
Memory
Main - 16GB Corsair Vengeance; 2nd - 12GB Corsair Vengeance