![]() > What happens if you hold the Power on button on for >5 seconds, does this turn the computer off? So there is power in USB connectors even when they are not recognized by PC. Yes, I tried to connect a USB led lamp and it is working on all USB ports. Thank you for your reply, I really appreciate it. Have you checked in Event Viewer for any noticeable Critical, Error or Warning events that may be relevant to the problem? many other things and nothing helped" doesn't tell us whether you did or not? Have you tried altering the sleep settings in Advanced Power options to see if that changes anything as saying "I did try. What happens if you hold the Power on button on for >5 seconds, does this turn the computer off? ![]() If there is no power at the USB port, check in Device Manager > Universal Serial Bus Controllers > right click USB Root Hub (check all of them) > Properties > Power Management and check that the checkbox that says "allow the computer to turn off this device to save power is UN checked > OK. ![]() This is just to find out if it is a controller problem or a power problem to the USB ports. ![]() (or mobile phone - shows charging but not connecting, etc, anything that gives an indication of power being supplied by the USB port) Hi the USB ports are not working, if you are using a PS/2 mouse (you didn't say) then try plugging in a USB mouse just to see if the laser light turns on, indicating that there is power available or not on the port. ![]()
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