Barcrest t7 HELP

Hi guys

I need a little help if anyone is familiar to the t7.

I currently have no signal on both screens I know pc is kicking in as it gives off one beep just after note acceptor initialises when turned on. Also a solid red light on pc power button

Have tried to remove the ram clean the slot and the ram card have also tried the ram in a different slot.

Have remove graphics card cleaned it all and also cleaned the slot.

The issue happened when installing a game both screens just came up no signal was working fine before hand.

Any help out there would be much appreciated