Third monitor on j5Create adapter stopped showing up

Last year my Toshiba laptop's VGA input broke so I have been using an adapter that lets me plug a VGA cable from my Dell monitor to the laptop's USB input. It worked perfectly from the start then last week it stopped working.

I sent it back to the retailer for repair but they said it worked fine once they installed the drivers, and sent it back to me. I've installed those drivers and the third monitor did briefly pick up a signal but after I rebooted the monitor is no longer to be seen.

My mouse runs off the laptop monitor as if it's going somewhere but it's definitely not to the Dell monitor. In CP/Display settings the Dell monitor is not found.

I've tried different combinations of monitors and cables but no go. Please can someone suggest a fix?

Thanks in advance
Jo

Hi again, since submitting this request I have some new information about the problem. On the advice of the retailer I uninstalled, rebooted, reinstalled, rebooted and then managed to get the third monitor working.


However, after an hour it kept disconnecting and reconnecting, disconnecting and reconnecting so I have pulled it out again.
This morning when I plug it back in my laptop doesn't react to the new USB device and it is not showing the third monitor.

The retailer is saying it's a driver issue but to me it sounds like the device is faulty, especially as it gets quite hot to touch.