OS IS WINDOWS XP HOME EDITION. I SUSPECTED THE SCREEN SAVER BUT COULD NOT FIGURE OUT WHY THIS WOULD AFFECT VWS PLUS THE SCREEN SAVER WAS TO KEEP THE CATS FROM HITTING THE MOUSE & POUNCING ON THE KEYBOARD. I STILL HAVE THE SCREENSAVER RUNNING & SINCE WE REMOVED ACCESS OF THE MOUSE VWS HAS NOT CRASHED IN 7days aside for once on the 10th. Sounds unlikely to me too but I really haven't done anything that kept it from crashing except put the mouse out of touch from the cats. Remember, VWS was crashing everyday sometimes multiple times a day. Now it runs like a charm. I did go into Device Manager & under USB Root Hub I right clicked to disable the "ALLOW THE COMPUTER TO TURN OFF THIS DEVICE TO SAVE POWER".....BUT, that did not stop the crashing neither did going into VWS "Settings", then "Program Settings", & unchecked "Restart program if communication is lost for 5 minutes" & I changed the VWS CPU Resources to High...BUT, these setting changes did not stop VWS from crashing. So, I have read the new advice & I will get rid of the screen saver if VWS starts crashing again. About the hard drive power down-"NEVER TURN OFF HARD DRIVE, NEVER SLEEP, HIBERNATE, NEVER TURN OFF DISPLAY, ETC.. NOTHING. POWER SETTINGS ALL SET TO NEVER TURN OFF ANYTHING. I AM GOING TO TRY SOMETHING THOUGH JUST TO SEE WHAT HAPPENS. I AM GOING TO MAKE SURE THE SCREEN SAVER IS ON, MAKE SURE ITS SET TO "ON RESUME, DISPLAY LOGON SCREEN. THEN I'LL REPEATEDLY CLICK THE MOUSE, PRETEND I CAN TYPE LIKE A PRO & SEE IF VWS CRASHES. IF IT DOES NOT WE HAVE A BIT OF A MYSTERY. SORRY ABOUT THE CAPS. KEEP HITTING IT. AND LAST BUT CERTAINLY NOT LEAST...THX FOR ALL THE HELP. I WILL REPLY AFTER MY TEST.