So i did these solutions
my os: win 64bit
1- i have tried all usb ports and plug and unplug the the cable hundred of times still not working
2- download logitech software
mouse working well very in my laptop wimdows 7 32bit
my previous mouse and keyboard are working
mouse working in my pc bios then when boot windows, mouse lights turned off, notice that the dpi led is working all time.
my os: win 64bit
1- i have tried all usb ports and plug and unplug the the cable hundred of times still not working
2- download logitech software
mouse working well very in my laptop wimdows 7 32bit
my previous mouse and keyboard are working
mouse working in my pc bios then when boot windows, mouse lights turned off, notice that the dpi led is working all time.