Run the sfc /scannow System File Checker command to replace a missing or corrupt copy of the msvcr70.dll file. If this DLL file is provided my Microsoft, the System File Checker tool should restore it.
1.Open Command Prompt.
Important: You must run Command Prompt as an administrator in Windows 7 and Windows Vista to use System File Checker.
2.Once Command Prompt is open, type the following command and then press Enter.
3.System File Checker will now verify the integrity of every protected operating system file on your computer.
4.Restart your computer if sfc /scannow did actually repair any files.
Note: System File Checker may or may not prompt you to restart but even if it doesn't, you should restart anyway.
5.Repeat whatever process caused your original problem to see if sfc /scannow corrected the issue.