Minecraft doesn't Run!

Minecraft doesn't Run on my Computer and this is what happened:
I'm a Premium user and when i ran Minecraft on my 1.3.8 launcher it said on the "play" button "play offline", and i didn't have access to the 1.7.5 version of Minecraft, so i deleted all my Minecraft Files except the Launcher and when i ran it, it had a Fatal Error (There's a file with it attached). I tried to Download the launcher.pack.lzma file myself and it ran well, and it updated to MCLauncher 1.3.10, but when i try to log it says "Sorry but we couldn't connect to Minecraft Servers, Please make sure your internet connection is fine".

My computer is a VIT-E1110 (Venezolana de Industria Tecnologica) with Windows 7 Home Basic, Intel(R) Pentium CPU G620 2.60 GHz 2.00 GB RAM, 32Bits.

By the way, My Minecraft used to run well before.