[VIA] Random crashes problem

Question

Ok, ive had this problem since i bought my PC(2 years ago).
Local stores 1st told me was my HDD, so i changed it
Then they told me was my Videocard, so i changed it
After told me it was my motherboard, so i changed it
again i got told was my video card, i bougt a better one
i also got told to update my BIOS, my friend is a PC expert, so he flashed it everything went fine;
Then i went here or on AMD forum and i got told my PSU wasnt strong enuf i bought a very good antec psu for 150$
between each of thoses steps the issues seemed to be fixes but no it all starts again...
When i bought my new psu, i reformated and it went fine for a couple of months...
its now back...random crashes...no blue screen, it only restarts or becomes not responding.
im very pissed and i want answeres cuz i paid alot for my pc...
here are my specs
mobo = KT6 Delta, MS-6590 (v2.X) ATX latest bios update
cpu = AMD Athlon XP 2800+
videocard = ATI radeon 9600XT 256mb
ram = 2x512mb DDR 400 MHZ
dvd = HL-DT-ST DVDRAM GSA-4040B
cd = HL-DT-ST CD-RW GCE-8523B
2HDD = 200gb and 160gb
PSU = Antec Smartpower 350

Answer 1

heres my PSU model
http://www.antec.com/specs/SP350_spe.html
also i posted on AMD forum and some ppl suggested me some changes in my bios but its still crash...
heres my new report
CPU(s)   
Number of CPUs 1
Name AMD Athlon XP
Code Name Barton
Specification AMD Athlon(tm) XP 2800+
Family / Model / Stepping 6 A 0
Extended Family / Model 7 A
Package Socket A
Technology 0.13 µ
Supported Instructions Sets MMX, Extended MMX, 3DNow!, Extended 3DNow!, SSE
CPU Clock Speed 2085.0 MHz
Clock multiplier x 12.5
Front Side Bus Frequency 166.8 MHz
Bus Speed 333.6 MHz
L1 Data Cache 64 KBytes, 2-way set associative, 64 Bytes line size
L1 Instruction Cache 64 KBytes, 2-way set associative, 64 Bytes line size
L2 Cache 512 KBytes, 16-way set associative, 64 Bytes line size
L2 Speed 2085.0 MHz (Full)
L2 Location On Chip
L2 Data Prefetch Logic yes
L2 Bus Width 64 bits
Mainboard and chipset   
Motherboard manufacturer MSI
Motherboard model MS-7021, 1.0
BIOS vendor American Megatrends Inc.
BIOS revision Version 07.00T
BIOS release date 04/02/01
Chipset VIA KT600 rev. 80
Southbridge VIA VT8237 rev. 00
Sensor chip Winbond W83697HF
Graphic Interface AGP
AGP Status enabled, rev. 3.5
AGP Data Transfer Rate 8x
AGP Max Rate 8x
AGP Side Band Addressing supported, enabled
AGP Aperture Size 256 MBytes
Memory   
DRAM Type DDR-SDRAM
DRAM Size 1024 MBytes
DRAM Frequency 166.8 MHz
FSB:DRAM 1:1
DRAM Interleave 4-way
CAS# Latency 2.5 clocks
RAS# to CAS# 3 clocks
RAS# Precharge 3 clocks
Cycle Time (TRAS) 8 clocks
# of memory modules 2
Module 0 DDR-SDRAM PC3200 - 512 MBytes
Module 1 DDR-SDRAM PC3200 - 512 MBytes
Software   
Windows version Microsoft Windows XP Professional Service Pack 2 (Build 2600) 
DirectX version 9.0c