Hi.
I have installed Mach3and it is running without the port driver.
If I then instal the port driver I can not run the program. The computer reboots when I try to run Mack3

Anyone else had this problem
 

Try using the special driver(SpecialDriver.bat), you will find it in the Mach3 folder, just double click it and it will install.
If that doesnt help go back to the original one (OriginalDriver.bat) and then try the optimisation steps outlined on the Downloads page.
Hood