if you have original windows 7 disc, you can reinstall it
if you have recovery windows 7 disc, you can fix it
You can find here all required information http://www.howtogeek.com/howto/windows-vista/fixing-bootmgr-is-missing-error-while-trying-to-boot-windows-vista/
That is an Error code for the Windows Media Player application. It likely has to do with file incompatibility or missing codecs. Try Googling the error message for possible resolutions to the problem.
Windows has some files which are corrupted or missing due to virus or other windows error. Important files need repair and other should clean up to make windows registry free from errors.
Probably some files from your Windows folder are missing or your hard disk has crashed. Try repairing it by booting with your Windows XP CD and selecting Repair.
user archived windows Error Report
Windows 10 does not cause a critical error. In PHP, any syntax, mathematical, or system error can cause an error to occur.
WINDOWS EXPLORER DEBUG ERROR REMOVEL SALUSION
An error message regarding a procedure entry point generally indicates that the computer is missing a Windows starter pack. The proper service pack should be installed on the machine.
How are you doing this installation? A disc? Please leave a message on my board with more details, and I may be able to help you with this.
Mine has suddenly started doing this too. A required Microsoft Windows system directory, the Windows System32 directory is often located in either C:\Windows\System32 or C:\Winnt\system32. Often many Microsoft Windows error messages will contain the system32 directory because many of the system files Windows uses to run are stored in this directory. By itself the System32 directory will not cause any errors unless it is missing of course. If you are getting an error with a file in the System32 directory search for that file. No error message, it just pops up and has to be 'closed'
This is where Windows cannot read a disk consistently. Windows will first read a bit of data from the disc, copy it, and then check again to make sure that the copy matches the original. If it does not, it tries again. if it still cannot get a consistent reading (after about ten tries), it will throw a "cyclic redundancy error" message.
Stop error (BSOD) that occurs during startup. A stop error can be caused by a corrupted registry, a system file that is missing or damaged, a device driver that is missing or damaged, bad memory, or a corrupted or failing hard drive. Use the Microsoft web site to research the exact error message and error code. Use the Startup Repair tool and then examine the log file it creates at C:\Windows\System32\LogFiles\Srt\Srttrail.txt.