Play M&B sometimes it is automatically restart

[BlademasterX]

Hello. First, sorry for my English 

I have some problem when i playing M&B. Sometimes when i play it will automatically restart ( Computer, not game application )  ( likes someone pushing the restart button  ) sometimes it restart when in the battle, sometimes in the world map, or playing in 30m-2h, but sometimes i can play long time for 5-6 hours. I don't know what happen, because i play other games it isn't has this problem, and if i turn on my computer for 4-5h because i sleep  it hasn't got a problem too. Can everyone solve this problem ?

My CPU :

Pentium(R)4 - 2.4 GHz
RAM - 2.25 GB
Video Card - ATIRadeon9250

EDIT : The "Shut Down" and "Restart" are different problems. I try to search these 2 problem and its result are differently. My computer is automatically restart, not shut down ( Because before i search it i think these 2 problems are same ) Anyway sorry for this, and sorry for above reply too.  Thank You. 

 

[Servitor]

Maybe your Graphics drive overheats as a result of having too much people on the screen? Don't underestimate the power cost of M&B.

Does M&B shut down or your computer?

If you by any chance are playing M&B Warband, this might be similar to your problem? http://forums.taleworlds.com/index.php/topic,142850.0.html

Just IF.

 

[BlademasterX]

Thank You for reply, my computer is restart, not shut down  ( I try to search about these 2 problem - shut down and restart is different problem ) sorry for type it wrong i had to search for google about this problem. everyone think this problem is happen because my Power Supply is old and nearly expired. today i buy a new Power Supply but i haven't test it for M&B now. If i try it and hasn't any problem about computer is automatically restart, so that is a cause of problem. I will edit this post again if i try it for 4-5 hours and it will happen or not.

Thank You Again. 

 

[kcole4001]

I had a similar problem recently, I thought it was the video card (which was dying anyway). My machine would shut down as if the power cord had been pulled.
Everyone else thought it was the power supply.

It turned out to be a bad stick of RAM.
Check the value that your machine is recognizing at startup against what you know is installed to see if it's the same problem.