神兵小将游戏,:这几天一开机就出现这几个Microsoft Visual C++ Runtime Library

一开机就出现:
Microsoft Visual C++ Runtime Library
Buffer overrun detected!
Program :C:\WINDOWS\system32\RUNDLL32.exe
A buffer overrun has been detected which has corrupted the program's internal state. The program cannot safely contimue execution and must now be terminated.
还有:
Mrcrosoft Visual C++ Runtime Library
Buffer overun detected!
Program:C:\Program Files\Internet Explorer\IEXPLORE.EXE
A buffer overrun has been detected which has corrupted the program's internal state. The program cannot safely contimue execution and must now be terminated.
运行QQ时有时会出现:
Microsoft Visual C++ Runtime Library
Buffer overrun detected!
Program: D:\Program Files\Tencent\QQ\QQ.exe
A buffer overrun has been detected which has corrupted the program's internal state. The program cannot safely contimue execution and must now be terminated.
点确定后,QQ就自动关闭了.
还有一个我忘了是什么时候出来的了:
NSIS Error
The installer you are trying to use is corrupted or incomplete.
This could be the result of a damaged disk, a failed download or a virus.
You may want to contact the author of this installer to obtain a new copy.
It may be possible to skip this check using the /NCRC command line switch
(NOT RECOMMENDED).

我有点晕,这都是些什么啊?它们要干吗啊?每次开机都出来.....不明白.我得怎么办啊?
我好像没装C++,我在添加和删除程序里没见到啊.