I am having trouble with my monitor going black at random and staying that way for only a few seconds. It seems it does it more often when I am running multimedia programs. Below is some info on my computer. I think it may be a cooling problem, but then what do I know. Any thoughts as to why?

Computer:
Operating System Microsoft Windows 2000 Professional
OS Service Pack Service Pack 4
DirectX 4.09.00.0904 (DirectX 9.0c)


Motherboard:
CPU Type AMD Duron, 800 MHz (8 x 100)
Motherboard Name Gigabyte GA-7ZX(-B)
Motherboard Chipset VIA VT8363(A) Apollo KT133(A)
System Memory 256 MB (PC133 SDRAM)
BIOS Type AMI (11/14/00)
Communication Port Communications Port (COM1)
Communication Port Communications Port (COM2)
Communication Port ECP Printer Port (LPT1)

Display:
Video Adapter NVIDIA GeForce4 MX 4000 (128 MB)
3D Accelerator nVIDIA GeForce4 MX 4000
Monitor Plug and Play Monitor [NoDB] (F6EZ49226979U)

Multimedia:
Audio Adapter VIA AC'97 Audio Controller [H]

such a slow CPU may have a hard time keeping up with software.