My computer is restarting?

I bought a computer 5 days backbone.We are using it for graphics design.While doing some work, its restarting automatically.



We are using Windows XP..



Configuration is 914 chipset motherboard

dual core processor 3.6

2 gb ram

512 mb graphics card

300 gb complex disk

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My computer is restarting?

I see that in plentifully of the older models that customers bring to me. near is a fan on the processor. those fan wear out and when they stop working the processor gets to hot and the computer will restart. you probably enjoy a big fan on yours. check to see if its running. save the case cover stale for a while to see if it stops. also the heat absorber on the processor may be caked near dirt that can prevent the fan from doing its charge. remove the fan and check the absorber. its probably one of those. everything may appear fine but when you go to use a program the processor get hotter. when it gets hotter it wishes more cooling. ofcourse if you just bought it, it must be verbs. you may just want a better fan.
could be overheating or some quality of hardware confict... are you getting the BSOD(blue screen of death) since it restarts?
can be because of virus or cpu fan may not be working.

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Try increasing virtual memory. I have this problem for the longest time because I set the virtual memory tab to "system managed size", which used partly of what was reccomended.