Why is my boot manager for windows 7 just stopped working?

Hello, I am facing the same problem with my PC, which you are facing right now with Windows 7 operating system and with boot manager. I have solved the problem by rebooting and formatting my PC by genuine Windows 7 CD. As another option that is, you can look for back up files creation process for trouble-shooting. But, that will only work if your boot manager reboots properly. So, better to get your C: drive or whole PC formatted by using a genuine Windows 7 CD or DVD.

My PC had also slowed down and my operating system was corrupted. One of my friends, who is an IT expert, said that this happens due to the corrupted media that exists within a hard disk drive. I have changed my hard disk drive now by taking a new 500 GB hard disk. Check your whole system configuration properly. Check your motherboard compatibility, CD and DVD drive, RAM at least 2GB and also power supply box to work smoothly and in a hassle-free way. Formatting and rebooting your PC will solve the problem for you. Once the installation process is done, do not keep "automatic updates option on" for Windows 7 operating system. This might create software counterfeiting problem and might corrupt your window again.