Blinking desktop

I have recently purchased a new Computer, with Intel core 2 Quad CPU with Q9550@2.83 gHZ, 4 GB RAM, 32 BIT operating system and 1 t.b hARDDISK. On 23rd October I have installed Windows 7 Ultimate to this computer. I have installed the Intel Driver software which I got bundled with my new computer. I have also installed GFX Win 7 PV INTEL, the windows 7 driver which I have downloaded from the Intel site. My problem is, if I try to open four or more programmes, the desktop blinks continuosly and the computer automatically shuts down. Why this happen? Any suggestions?

Probably graphics drivers.. if you can get it work for a minute or two you can probably view you administrative logs under Event Viewer /custom

And check your device manager for the yellow triangle by graphics.

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