Hey guys, ive spent about 2 hrs trying to fix this issue Ive recently formatted a computer we use at a tanning salon and installed windows 7. Was running vista xp before Basically the device we use to control the beds is a serial port connected piece of hardware called a t-max manager WORKED GREAT on vista, using a serial cable under com2 Installed windows 7, and it automatically assigned the serial port a com1 No problem, at first in the software I tried changing the setting to com1 and restarting, no go so I changed the com in the device managers settings of windows to com2 and then the software back to com2 - result - no go so I tried com3 ! still no go I double checked all the settings, downloaded the manuals for the t-max, made sure all the settings were correct in device manager ie baud rate, bit parity bla bla bla everythings setup right but it still refuses to connect to the "t-max manager" Im almost ready to go back to vista, unless anyone else has any ideas? Also we cannot use a usb to serial connector because for some reason it caused the software to freeze, found this out about 2 years ago after 3 days of trying to figure it out Im thinking maybe the driver for the serial port is not current? It does show its working correctly... Is there a way to test the port ? Any ideas? thanks!