I am doing a build for the first time using a LUX Flight Controller, i was able to set it up last night in cleanflight, i did the configuration, setup the modes, even calibrated the ESC's. 

This morning i tried connecting it to cleanflght and now when i connect it to the computer or even if i power it on with a battery it immediately goes into DFU mode, i am obviously not able to change anything so i am stuck. AGHHHHH!

I tried pressing the boot button and plugging in, which works like it should as it immediately goes into DFU mode whereas when i plug in without pressing the boot button i do get the red/green LED's that are next to the blue one blink a few times initially then they go off and i get the steady blue light indicating its in DFU mode.

Any other suggestions? Can anyone provide some insight as to what caused this or how to prevent? Or do you think the board is defective?

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OK Gents, I figured our that this is happening when i have my receiver ON, if its OFF it works fine.

I dont think this has to do with the solder pads on the back as i was able to setup the switches on my Taranis last night, i made sure they were registering the correct movement in cleanflight and they were, this confirms that i did bridge the pads correctly (SRX and 5).

Very odd, assume this is a new FC on a new build?

I run LUX's but not seen a problem like this, had assumed it was dodgy boot mode switch but the RX point complicates things.

Maybe if you share a picture of the pads you've soldered for voltage and RX signal?