How to Install Windows 7 From Pen Drive (USB) - Easy Method
So many times it happened that our CD Drives fails to read the CD or DVD to boot. Due to this we fail to re-install the OS in disaster. Some times due to missing of some system files our OS gets crashed and it shows multiple erorrs or stops working. In this case the ultimate solution is to Re-Install the operating system.
So this is the method to create a bootable disk for Windows 7 and you can use when the CD or DVD stops working.. You don't need any third party software to create this.