I have a problem with Windows 8.1 Prof. 32-bit using Compatibility Mode.

                          I am programmer, my aplications are Clipper programs ( Clipper 5.01 and

                          Blinker 6.0) and they work fine on early versions of Windows.

                          On Windows 7 Prof. 32-bit, I noticed that program sometimes loses input

                          from the keyboard during long actions, for example: reading of big disk file

                          and creating new working file. That means, keyboard stop working for task

                          with my program, but not for the other activ programs in Windows.

                          I tried to use Compatibility Mode and after long testing I recognized that

                          Compatibility Mode Windows 98/Me can resolve my problem. Other Compatibility

                          Modes did not resolve problem. What is magic in Win 98/Me Compatibility Mode ?

                          I use that Compatibility Mode for .BAT files ( not for .EXE files ) and everything is OK.

                          That was on Windows 7 Prof. 32-bit. 

                          On Windows 8.1 Prof. 32-bit problem can not be avoided: start program without or

                          with any Compatibility Mode occurs same problem. Compatibility Modes in Win 8.1

                          are not for .BAT files, so I used Compatibility Mode with .EXE files.

                          None of the compatibility modes are enough. There is still randomly stoping input

                          from the keyboard. That means: program sometimes work fine during several starts

                          and finish regulary without losing keyboard input. But, sometimes same program

                          with same datas can work once or two times. When that happens, I have to end task

                          by click X-buttom of window because keyboard dont work any more.

                          This test was on Laptop Lenovo G500 with 4 GB memory and two 500 GB disks.

                 I have regulary installed Windows 8.1 Prof. 32-bit and all Windows Updates are

                 successfully instaled. NTVDM.exe is succesfully instaled 20.2.2015. ( NTVDM.exe is

                 526848 bytes and NTVDMD.dll is 14848 bytes on C:\Windows\System32 ).

                 Same problem is on other computers with Win 8.1 , so I think problem is in the

                 operating system.

                 Do You have any ideas how to solve this keyboard problem od Win 8.1 ?

                 Can You find Microsoft Windows 8.1 specialist for NTVDM who can analyze

                 the behavior of Windows in this problem ?

                 Thank's for Your help

                  Zoran