hi i am a new operating system stand. I tried all versions and I could not install. please let any ideas thanks.
My Laptop is:

Asus K50ie

• CPU
Intel® Pentium® Processor T4400 (1M Cache, 2.20 GHz, 800 MHz FSB)

• LCD
15.6" HD (1366x768) LED backlit,Color-Shine (Glare-type),Asus Splendid Video Intelligent Technology

• Chipset
NVIDIA MCP79D

• Memory
3GB (1G + 2GB) DDR3 1066 MHz SDRAM, 2 x SODIMM socket for expansion up to 8GB SDRAM

• VGA
NVIDIA® GeForce® 310M, 512MB VRAM

• HDD
320 GB, SATA 5400rpm

• Optical storage
DVD/RW Super-multi

• Communications
802.11 b/g/n, Built-in Bluetooth™ V2.1+EDR , LAN 10/100/1000