a) check that the cable is securely connected to the computer and plotter
b) replace the USB cable (preferably short and high-quality filter)
c) to verify settings WINDOWS
d) change in Windows power saving settings (turn off the computer to sleep and turn off)
e) turn off the antivirus and firewall
f) eliminate the voltage drops in the electrical network, use the stabilizer or UPS.
g) reinstall WINDOWS, or replace the computer
