These steps will attempt to repair the OS using repairs via System Recovery Options and then everything else possible to get it started. It does not cover hardware problems which might be indicated if these steps fail to run and can be tested using Memtest86+ to Test RAM for 5-6 passes, and HD Maker's HD Diagnostic Extended CD scan followed by Disk Check from System Recovery Options Command ...
Startup Repair is a system recovery tool that automates common diagnostic and repair tasks of unbootable Windows 7 installations. If the computer fails over into Windows RE because of a detected boot failure, Startup Repair launches automatically.
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The sfc /scannow command (System File Checker) scans the integrity of all protected Windows 7 system files and replaces incorrect corrupted, changed/modified, or damaged versions with the correct versions if possible.
A) Click/tap on the Repair or Change/Repair (depending on the button displayed) toolbar button. (see screenshot above) OR B) Right click on the selected program, and click/tap on Repair or Change/Repair (depending on the option available). C) Follow the rest of the onscreen instructions to repair the program, then go to step 6.
For this reason, the permission settings of Windows� default reparse points should never be altered by the user. If you are having problems with backup software not completing it may be caused by changed NTFS permissions on a specific junction. This tutorial will enable you to repair Windows� default reparse points.
This will show you how to create a Windows 7 system repair disc to be able to use to boot to system recovery options to help recover your Windows 7 installation if you don't have a Windows installation disc, can't find your Windows installation disc, or can't access the recovery options provided by your computer manufacturer. A system repair disc is not able to install Windows 7.
Also checkout the Seven Forums Tutorials:- Startup Repair MBR - Restore Windows 7 Master Boot Record Bootmgr is missing - Fix Bootrec.exe Tool - How to Use in Windows Recovery Environment
This will show you how to do a repair install (aka: in-place upgrade install) to fix your currently installed Windows 7 and preserve your user accounts, data, programs, and system drivers.