Laptop switches to Generic Pnp Monitor and back to Mobile Pc Display

[Cryptog]

Hey guys i just singed up to this forum soo,
My laptop is Toshiba Qosmio X875
CPU Intel Core i7 (3rd Gen) 3630QM / 2.4 GHz
Graphics Processor NVIDIA GeForce GTX 670M - 3 GB GDDR5 SDRAMi
Its a very powerful laptop but it used to have overheating problems but now its fixed .
So the problem now is that the display makes a sound like plug in and plug out thing the screen goes black for 2sec and switches from the Mobile Display to Generic Pnp Monitor . i went to screen resolusion when it happens and it shows 1|2 multiple monitors and then it makes this unplug sound and goes back to normal Mobile Pc Display. It usually happens when i play a game and its really annoying.

Any help will be appreciated Thank You.

 

[Gornot]

Have you been attaching another monitor to your laptop in the past by any chance?

 

[Cryptog]

No i didnt.... thats the point

 

[Gornot]

I assumed you've tried updating GPU drivers, if you're not already on the latest version.

This overheating problem - what exactly was it? If the hardware needed to be repaired, perhaps something screwed up during that.

 

[Cryptog]

Thats what i think of too there's no other explanation about this my drivers all the latest. They replaced the fans and smth else so when they put it back together smth might have gone wrong....

 

[Gornot]

Can you take it back to the repair shop and see what can be done? I think that's the best course of action.