If you are facing with Boot problems on your computer with Windows 7, it can be very helpful to repair your Master Boot Record which will restore your Windows 7 boot loader. In this tutorial I will show you how you can do that using your Windows 7 installation disk.
The first what we need to do is boot from installation disk. Follow below steps to get started.
Step 1: Reboot your computer and boot from Windows 7 installation disk
Step 2: Wait for few seconds and then click trough until you see Install Now button. At this time in bottom left of your screen you should see Repair your computer option. Click on it
Step 3: From new screen make sure you select Use Recovery tools that can help fix problems staring Windows. Now from the list you need to choose Windows 7 and then click Next button
Step 4: Now you should see the System Recovery Options screen, where next to many others you have the option to run a Startup Repair tool. Click on Startup Repair to run it.
Step 5: Startup Recovery tool will run and it will start checking for problems and errors. If he finds any it will automatically fix them.
Step 6: Once repair process is done, restart your computer and your Windows should boot without any problems.