f you want to run Windows 7 on your PC, heres what it takes:
1 gigahertz (GHz) or faster 32 bit (x86) or 64 bit (x64) processor
1 gigabyte (GB) RAM (32 bit) or 2 GB RAM (64 bit)
16 GB available hard disk space (32 bit) or 20 GB (64 bit)
DirectX 9 graphics device with WDDM 1.0 or higher driver

Additional requirements to use certain features:
Internet access (fees may apply)
Depending on resolution, video playback may require additional memory and advanced graphics hardware
For some Windows Media Center functionality a TV tuner and additional hardware may be required
Windows Touch and Tablet PCs require specific hardware
HomeGroup requires a network and PCs running Windows 7
DVD/CD authoring requires a compatible optical drive
BitLocker requires Trusted Platform Module (TPM) 1.2
BitLocker To Go requires a USB flash drive
Windows XP Mode requires an additional 1 GB of RAM, an additional 15GB of available hard disk space, and a processor capable of hardwarevirtualization with Intel VT or AMD V turned on
Music and sound require audio output

Install:
Download and extract using WinRAR.
Use Nero or other burning app to burn the ISO image
Burning speed should not be faster than 4x. Otherwise, it might not work.
Restart your computer.
Make sure you have selected your DVD ROM/RW drive as a first boot device.

Enter the BIOS pressing the DEL button, set the option, insert your Windows 7 installation and restart computer.
The black screen will appear (image 01).
Press any key to boot from CD or DVD.... (by pressing the key you are entering the setup)
Select your language, time and currency and keyboard input (optionaly)
Click install now
Choose your edition (x86 is 32 bit, x64 is 64 bit) depending of CPU type you have.

Choose x64 if you have 64 bit processor.
Click I accept.
Click Custom (advanced).
Choose your partition/hdd drive where Win7 should be installed and click format.