This article explains how to troubleshoot issues related to serial touch drivers

Troubleshooting and recommendations for serial touch drivers can be found below.

For serial installation, the single-touch driver needs to see handshaking signals:

• DSR (pin 6) 
• CTS (pin 8)  

If it doesn't, it will install but touch will be disabled.  

1. First, verify the touchmonitor works by testing it with a USB connection.
2. If the touchmonitor is known good, try the multi-touch driver using a serial connection. It should work by default without requiring all the handshake lines.
3. If the multi-touch driver doesn't work, you can try installing the single-touch driver for serial with handshake disabled.  This requires silent installation, which requires command line installation.  
   1. Because command line operations can be quite cumbersome with long folder names, it is best to do some renaming before doing the installation.  The following steps make it manageable.
   2. Double-click the single touch driver (5-series) to open the Unzip dialog.  The default folder (a very long and complex path) will be highlighted, so to change it, all you have to do is type a new path.Type in c:\elo to create and unzip the files to that folder.  When finished, click OK, then click Cancel to terminate the installation.
   3. Open Windows File Explorer and go to the elo folder on the C drive.
   4. Right-click the driver filename (SW60... etc., etc.), select Rename, and type in st582 (or whatever version it is) - the object is to make a short, recognizable name.
   5. Now open the Windows search box and type in cmd to get to a command prompt.
   6. Type in c:
   7. Press ENTER to select the C: drive.
   8. Type in cd\elo
   9. Press ENTER to change to the elo directory.
   10. The prompt should reflect that folder.
   11. You can type dir if you need to review the file names in that directory.
   12. Type in cd st582, or whatever you renamed the installation folder to.  
   13. Now you can enter the command line to do the silent installation for no handshake:
       • setup /NoHandshake/Is/p:#   (where # is the COM port to use)  The "Is" part is upper case i as in India.  Remember the colon between p and COM port number.  And be sure to use forward slashes, not back slashes.
   14. Press ENTER to start setup.
       • This will install the driver for serial operation on the indicated port, ignoring the handshake lines.  This should enable touch operation for as little as a 2-wire connection using pins 2 (receive) and 5 (ground).