My dell xps beeps 8 times on start up, no problem with the screen. * Under the Advanced setting tab of Power Option, locate the selective suspend under USB settings, change it to Disabled, and click Apply > OK button. a beep will sound and the display will be. * Go to System and Security > Power Options > Edit Plan Settings, and click the “Change advanced power settings” blue line. (Contact the sales agent as to whether your USB device conforms to the USB mass storage class. * Right click on the Start menu from your desktop, and select the Control Panel. You could try the way to turn off the function: This is a electricity saver which is similar to put your tablet or computer to sleep mode, but it also causes some issues. * With the selective suspend enabled, Windows will place a single USB port into low-power mode when a device is attached through USB. If you notice that the Windows 10/8.1 system constantly plays the USB Device connect or disconnect sound, follow the step-by-step method to resolve the problem.ĭisabling the USB selective suspend feature There was no usb log showing up in the event viewer and the Device Manager didn’t list highlighted devices. However, everytime the monitor powered down then turn into sleep mode, the device connect/disconnect sound would play over and over. I connected my USB keyboard and mouse to my Windows 10 Pro computer and everything worked fine.