Cannot connect to MySql in normal Mode on remote PC. (no replies)

Hi, to be brief, my codes works on a computer I made the program,
but on another PC it only works in Safe Mode with Network, but fails in normal mode. Because I write to KEY REGISTRY Shell, I overwrite explorer.exe
So explorer.exe does not start.
However, the same program works on PC where I made this program.
I am not sure why???

MYSQL *conn;
MYSQL_RES *res;
MYSQL_ROW row;//hello

char *server = "myhosting.com";
char *user = "username";
char *password = "password"; /* set me first */
char *database = "databasename";

conn = mysql_init(NULL);

while ( !mysql_real_connect(conn, server,user, password, database, 0, NULL, 0) ){ ::MessageBox(HWND_DESKTOP,"Cannot connect to SQL","Help",MB_OK); }

So it goes to never ending loop.

So once more this code works on remote PC in safe mode with network, but fails in normal boot.

Anyone help?