Why Advent Vega keeps losing Wi-Fi? I recently bought a Advent Vega Android tablet and everything is working completely fine, however there is one slight problem with Wi-Fi.

Even though I have full Wi-Fi signal (it is as high as it can be), and it has been happily working for a while, after some time the Wi-Fi disconnects and when I go into the Wi-Fi settings it states that the network is out off range. If I turn off the Wi-Fi and re-enable it, it works fine. 

I've tried a couple of different ROMs but they all have the same problem. Does anyone have any clues as to how this can be fixed?
It could possibly be that you have a wifi time out enabled? Check the wifi settings carefully. Also, make sure the wifi sleep setting is diabled.

It could of course be a hardware issue (and probably is if it happens on multiple roms). It could be that the wifi card in the tablet 'Shuts Off' after a certain time, check online as this would happen to all owners of the tablet if this was the case.