Blank Screen

[woodchopper]

Screen went blank when son was playing a game on it - computer is 8 yrs old - can hear the fans and the rest of it working aside from the silent SSD. What's liable to be the problem ? On board graphics card ?
Has done it once or twice with me using for general use.
Would putting a graphics card in it solve the problem?

[woodchopper]

Additional - it is running Win 7

[bednobs]

maybe its the monitor rather than the cmputer?

[woodchopper]

monitor is working - it also has tv function