Operating system not found

[ChiefMombe1]

hi 

iv installed an operating system to my notebook but after i shut it down and i try to start it up it says  did not find operating system please reinstall your operating system 

i have done an extensive test of the harddrive from the bios setup menu and all passed. 

if i install another system it installls perfectly but the moment i shut it down and want to boot up again it then fails to find the operating sytem . 

i also tried the fix mbr but nothing seems to be helping can you please assist 

[WAWood]

@ChiefMombe1 

Windows PCs use two different sets of files to get you to a working desktop.

In terms of the first, Windows boot files, you need to follow the instructions below to create boot media from Macrium Reflect (MR) that can be used to rewrite/repair the boot media on your PC:
1) Download and install Macrium Reflect (MR) from this link on a working PC: http://www.macrium.com/reflectfree.aspx
2) Use the option to create a boot USB stick or CD

That will create MR bootable media. Then, you can boot your PC into WinPE using that media.

Have patience, as that can take a while to start and bring up the screen.

Once the screen is there, select the option to Fix Windows boot problems. It will then search for the OSs installed and list them, Select the one you want to repair and click Next.

It will now do the repairs, listing the things it has done.

When finished, select the option to Restart the PC.

If this worked, the boot repair succeeded and you will have your PC back.

But if it did not, the Windows system files are most likely corrupted and you would have to reinstall Windows from scratch to fix that.