i need some help with this one see spec below
the pc starts up fine but within a few minutes it shuts down (power down) this happens even in safe mode. i ahve tested each memory block individually and they all work but the machine still shut down. when booting with the cd to do a repair it shuts down. i have checked the CPU and the grease was dry so i put on new grease. it still shuts down. the fan on the cpu works fine and there is no excess heat coming off the cpu. i tried a new working hard driver and still got the same shut down problem.the bios is a raid config and ther is no changing it. there is one 1 hard drive that the bios detects, i do not beleive the problem is in the bios as new hard drive was detected. but no matter what i do the pc shuts down either after loading the desktop or while booting.
i am leaning to some fault on the MOBO. as this is the only thing i cannot change to test the shut down process.
any suggestion or steps to resolve this greatly appreciated.
this gateway PC
Gateway
Model DX4800-05e
Processor Intel Pentium dual-core E5200(2.50GHz)
Processor Main Features 64 bit Dual Core Processor
Cache Per Processor 2MB L2 Cache
Memory 6GB DDR2
Hard Drive 640GB SATA 7200RPM
Optical Drive 1 18X DVD+/-R/RW SuperMulti Drive featuring Labelflash Technology
Graphics Integrated NVIDIA GeForce 9200
Audio High-definition audio with 7.1-channel audio support
Ethernet 10/100/1000 Mbps Ethernet LAN
Power Supply 300W
Operating System Windows Vista Home Premium 64-bit
Motherboard
Chipset NVIDIA GeForce 9200
CPU
CPU Type Pentium dual-core
Installed Qty 1
CPU FSB 800MHz
CPU Speed E5200(2.50GHz)
L2 Cache Per CPU 2MB
CPU Socket Type LGA 775
CPU Main Features 64 bit Dual Core Processor
Graphics
GPU/VPU Type NVIDIA GeForce 9200
Graphics Interface Integrated video
Memory Capacity 6GB DDR2
Form Factor DIMM 240-pin
Memory Spec 2GB x 2 & 1GB x 2
Memory Slots (Available/Total) 0/4
Hard Drive
HDD Capacity 640GB
HDD Interface SATA
Optical Drive Spec 18X DVD+/-R/RW SuperMulti Drive featuring Labelflash Technology
Write max: 18x DVD-R, 18x DVD+R, 6x DVD-RW, 8x DVD+RW, 8x DVD+R DL, 8x DVD-R DL, 12x DVD-RAM, 48x CD-R, 32x CD-RW
Audio Chipset Integrated
Communications
Modem 56K
LAN Chipset Integrated
LAN Speed 10/100/1000Mbps
Front Panel Ports
Front USB 2
Front IEEE 1394 1
Front Audio Ports 2
Card Reader 15-in-1 High Speed Digital Media Card Reader w/Smart Copy Button
Compact Flash I & II, IBM Microdrive, Secure Digital (SD & Mini SD), Multi Media Card (MMC, MMC Plus, RS-MMC, and MMC Mobile), Memory Stick (MS, MS Duo, MS Pro, and MS Pro Duo), xD-Picture Card, SmartMedia Card
Back Panel Ports
COM 1
PS/2 2
Video Ports 1 VGA, 1 HDMI
Rear USB 4
Rear IEEE 1394 1
RJ45 1 port
Rear Audio Ports 6 ports
Expansion
PCI Slots (Available/Total) (1/2) PCI
(1/1) PCI Express x1
(1/1) PCI Express x16