In case if you are stuck with any issues associated with Linksys, such as the router keeps disconnecting, you can follow a few steps. To proceed with Linksys Troubleshooting, you are supposed to follow a few important steps:
You must power cycle the device
First of all, you must power off the router
Then, unplug the power cord
Now, wait for 10 seconds before plugging it back in
Read more: http //extender.linksys.com re6300