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I have similar issues with using an SR3000 on my own laptop (an Acer Aspire ES15). It exhibits the same connection behaviors in the RealSense Viewer. In my case at least, it is related to the computer not being able to maintain a connection to the camera due to USB power stability issues.
On my computer, the solution was to provide the USB ports with additional power supply. This can be done by plugging the camera into a mains-powered USB hub, which is available for around $15 from stores such as Amazon by searching for 'powered usb 3.0 hub'.
I was able to provide this extra power to make the camera work with a cost-free method though. By attaching a device that can be charged with the USB port to the computer (a tablet in my case), the charging tells the computer to send extra power to USB to provide the charging and so stabilizes the camera. The process is explained in the article below.