m17x r3 not recognizing the charger after a while

Hey guys,

The problem I started experiencing yesterday is that when I play dota 2 and am (for some reason it happens always on this moment) defeating Roshan on Diretide, my laptop stops recognizing that the charger is plugged in.
This is the third time in 2 days that this happened, my laptop's been on whole day today - the issue doesnt seem to be there by itself. No, it doesn't happen on every Roshan encounter at DT, but I couldn't simulate this problem so far in other circumstances.
The first 2 times when this occured my battery drained to 5% in about 1 minute and laptop shut down!!! This last time though - just a regular non-recognizable charger followed by standard battery drain.
I couldn't solve the problem by rebooting, HOWEVER, a shut down and turning the laptop back on made it recognize that its plugged in.

I'm running a custom A12 bios made by TechInferno and a gtx 680m that I installed with modified drivers if this helps.
Hope someone can help me solve this, would greatly appreciate any tips!

Thanks

 

What happens if you play around with the charger cable? It could be the modded BIOS.

 

How exactly should I play with that charger?
P.S. that situation hasnt happened for 2 days now. Weird. And I've had this BIOS installed for almost half a year now, why start giving me a trouble now?

 

True, if it's been fine then it could be something else.
I mean, playing around with the cable. Moving it up and down, and sidewards to see if any specific movement causes a power interruption

 

Hey, thanks for helping out,
I just thought of this - could dust be an issue? I havent moved the power cable or laptop for like 4 months now and its pretty dusty.