USB-connected mouse suddenly stops moving on Sony Vaio Z laptop

[eseyidli]

Hi.

My model number is VPCZ21C5E. It is 2011 Vaio Z series ultraportable laptop. OS is on Windows 7.

Once in a while my USB-connected mouse suddenly stops moving (trackpad still works - so it is only external mouse that stops). If I disconnect it from the USB socket and reconnects, the system detects the mouse and it starts working again.

This problem did not exist when I bought the laptop a year ago. I started happenning 3-4 months ago. I can not link it any software/event on my laptop.

I also do not think it is a physical problem on USB port becuase it I tried it on both ports and the problem happens on both ports - so seems to me a software/OS level problem, though it is possible that both USB ports have a problem but unlikely.

I would be thankful for any suggestions on how to fix this problem appearing. Thanks in advance.

[rich912]

Hi eseyidii,

Start by making sure that none of the USB Root Hubs are set to allow the computer to turn off the device to save power. Open Device Manager > Expand Universal Serial Bus Controllers > right click each one and select Properties > Click the Power Management tab.

If that has no effect there may possibly be a fault with the mouse itself - have you tried another mouse?

Rich

[eseyidli]

Thank for suggestion, Rich.

I have looked at Universal Serial Bus Controllers and some had Power Management tab and all were set to "allow". So I turned them off now. Will need to continue using the laptop for few hours/days to see if the problem happens again. I think it may have solved it.

Thans again.

Regards

[rich912]

Please let us know how things progress.

Rich