After making an update in the windows operating system, when restarting the computer, it does not start the operating system, a screen appears with a script on the left side of the screen on a black background blinking eternally. The problem we have is that the operating system boot or mbr system is not found.
If we take the hard drive we remove it from the computer and introduce it in another computer as a secondary hard disk, the hard disk appears and the information is, therefore we have clear that what has been annoyed is the boot sector of the operating system .
The first thing is to stay calm and calm, you do not have to format the hard drive and reinstall to solve it as indicated in almost all the help pages in which you are looking, you have to recover the disk boot system normally the bootmbr file, that is not found.
First of all, if we have the installation disk for example windows 7 we introduce it in the reader, and we configure the boot to start the cd.
When you boot it will enter the windows installation, we let it continue, we accept the first screen and when it asks us to accept the installation we enter the option Repair System. When doing this operation the system will try to detect an existing operating system on our hard drive, it will show us a message to restart the computer probably and we will re-enter the CD. We will do the same steps again until we get to the option to repair the system, and in doing so it will show us an existing installation on our disk (normally it usually happens that it is a Windows 10 installation), a Windows 10 installation has appeared to me , we select the installation and we see a series of options to perform: if repair the start, repair the installation, format, reinstall, ... In this case what we want is to repair the start to recover windows boot, click on repair start , the system will start doing a series of operations and will ask us to restart. Once the system is restarted,
If this does not work for us, we can try other alternatives such as using the Hirens Boot system and the MBRFix utility. Another alternative to perform is to use the MBRFix first and then with the windows 7 cd repair the start, it can work as well.
