为什么我的QQ总是启动一会就出现QQ程序错误重新启动

详情是这样Microsoft Windows XP Service Pack 2 [Build 5.1.2600]

QQ 15.75.440 3FF2317230C8957DD86A490DF98E44EA
Type: EXCEPTION_ACCESS_VIOLATION
Address: 0x0059FC1C
Error: Read address 0x00000000
Call stack:
0x00570000[2FC1C] QQHelperDll.dll: (390396902,0,60230192,0)
0x611B0000[64901] QQAllInOne.dll: (60230192,60230192,1397560,2010383471)
0x60AC0000[1FB5] MFC42.DLL: (15,0,1630487984,1244304)
0x60AC0000[1CEA] MFC42.DLL: (15,0,0,1244580)
0x60AC0000[1C73] MFC42.DLL: (0,133674,15,0)
0x60AC0000[1BFB] MFC42.DLL: (133674,15,0,0)
0x611B0000[11405C] QQAllInOne.dll: (133674,15,0,0)
0x77D10000[8744] USER32.dll: (1630289966,133674,15,0)
0x77D10000[8826] USER32.dll: (0,1630289966,133674,15)
0x77D10000[B4D0] USER32.dll: (9126904,15,0,0)
0x77D10000[B51C] USER32.dll: (1244764,24,9126904,15)
0x7C920000[EAE3] ntdll.dll: (5614220,1,5614220,1621889486)
0x77D10000[96D7] USER32.dll: (5614220,1,5614168,1621922212)

IEXPLORE.Sys及System16.Sys的清除办法,电脑奇慢无比

中毒后的情况：电脑非常慢,进程中会有很多的IEXPLORE,时不时的占用CPU 100%

统过分析发现此病毒经由 Explorer.exe进程启动后加载IEXPLORE.Sys.DLL及System16.Sys文件,所以在正常模式及安全模式都无法清除.需要在"带命令行的安全模式下"手工删除
此时显示隐藏文件的属性无法修改,无法看到这些隐藏文件
主要有以下文件:

c:\program files\Internet explorer\IEXPLORE.Sys
c:\program files\Internet explorer\IEXPLORE.Dat
c:\program files\Internet explorer\IEXPLORE.jmp
c:\program files\Internet explorer\IEXPLORE.ime
c:\program files\Internet explorer\IEXPLORE.Bak
C:\Program Files\Internet Explorer\PLUGINS\system16.Sys
C:\Program Files\Internet Explorer\PLUGINS\system.jmp
c:\winnt\system32\explorer.exe
C:\winnt\download\svhost32.exe
c:\winnt\download\svhost32.exe
C:\winnt\system32\drivers\svhost32.exe
c:\Nxldr.Dat
c:\Nx1dr.dat