Source client error!

07/18/2016 01:42 1stAntonio#1
16>c:\users\janes\desktop\source launcher v1\userinterface\../eterLib/StdAfx.h(23) : fatal error C1083: Cannot open include file: 'd3d8.h': No such file or directory


Who can help me?
07/18/2016 02:24 Markus_Resus#2
''No such file or directory''

should the question be answered...
07/18/2016 12:21 1stAntonio#3
How to decide this problem?