System reboots during Game Play

Most common cause for spontaneous reboots, especially when the computer is doing some sort of strenuous task like playing a high end game, is the power supply being inadequate.

You'll probably want to get a power supply with an extra 50-100W capacity over what you've got now if you go with a good brand product like Antec. If you go with some no-name cheap unit, I'd go with a 500W unit to be sure you've got plenty left over since it's pretty much a given you'll never get anything close to the full 500W out of it.

an overheating video card. Does yours have only a heatsink or does it also have a fan? If it has a fan is the fan functioning? Is the air flow blocked? Are the fan and heatsink clean or full of dust?

Well, the power supply is the one that came with my HP Pavilion Desktop.
The video card is as ATI Radeon 9200 PCI series. All it has is a heat sink. Didn't come with a fan.

The vid card is practically new. And as I inserted it, I cleaned, blew dust out of the pc fan and power supply fan.

and CPU temps show.

VAPCMD

Will it keep a log, time. I can start my game and the eventvwr will give me a time for error. But will sensor view log the temps / times?

Thanx again,
Mike

I didnt understand this part. I assume the cpu has to have a sensor to tell the fan when to come on. Is there a way to isolate whether it's a heating/cooling problem and not a power problem?

Thanx

although you have said:
" have turned off automatic restart so i can see the blue screen."
and
"and the eventvwr will give me a time for error"
you never did get around to mentioning EXACTLY what the specific errors shown are. Those error messages are IMPORTANT as they generally narrow down the possible cause dramatically (often to a very specific file even).

As far as your current post, didn't you read this at the publisher's site:
If the program does not finds monitoring chips on your computer, send us information about your system (motherboard model, CPU, chipset, etc.) and we will try to add support for your mobo. Also if possible please send us file 'debug.txt' from installation folder of SensorsView.
http://www.stvsoft.com/index.php?option=com_content&task=blogcategory&id=14&Itemid=31

To potentially rule out heat itself as a cause you can take the side of the case off and direct a floor fan onto the motherboard and paddle cards - that will generally work well to dissipate any heat buildup. (You also haven't got around to telling us whether or not the CPU fan is actually even still working so we are left with a lot of 'assuming' to do.)

You did mention that the power supply is the original but you haven't bothered telling us what all you have added to the system since purchase nor the wattage of the power supply - they do age and if your actual power is very "dirty" they can age fast.