Computer hangs.

[FJ]

Lets me explain my problem;

1) My PC hang after 30 or 40sec at the first time on.
2) While hang, can't do anything even move mouse cursor. CPU fan, PSU fan, power led and keyboard
    is on. The only  thing that can do is shut it down.
3) My PC can not on at all if I attempting to turn it on again.

Then I leave my PC about 1 or 2 hours and try to on again. The PC will become just like item no 1-3.
I already made a confirmation and found that the problem come from motherboard.

So, I really need help from anybody who has an experience repair mobo with this kind of failure. Which area or component probably may cause this happen. Thanks.

Motherboard info;
PCB no : 35-C957-00-21
Socket 370 & Slot
VIA chipset VT82C693A
3 DIMM
5 PCI Slot
1 AGP
1 AMR
1 ISA Slot

[GX1_Man]

What is the motherboard make and model? How old? What happened prior to this?

What is the power supply make and wattage?

What about other hardware? If not sure, download and run Everest, make a report and post it here.

http://www.majorgeeks.com/download4181.html

[FJ]

I do nothing with it, hang suddenly. I'm using 300watt psu and other hardward are functioning (swap to other board and working good). below are the board detail;

SG-APP133SSAD- Supergrace

SPECIFICATION
Processor - Intel® Pentium® III & Celeron® (66/100/133Mhz Front Side Bus) (FCPGA & Slot 1Type).
- 300/333/350/366/400/433/450/466/500/533/550/600/650/667/700MHz or above
Chip Set - VIA® Apollo Pro133 (686A + 693A).
BIOS - 2M Flash EPROM (Support PnP, APM, ACPI, ATAPI, DMI).
- IDE AUTO LBA Mode Supports HDDs over 8.4GB.
Trend Micro ChipAway Virus Protection.
Cache -
L2 Cache is CPU Built-in.
Memory - Size up to 768MB.
- Three 168-pins DIMMs.
On Board I/O - Support Two PCI Enhanced IDEs PIO Mode 3, Mode 4 and Ultra DMA 33/66 Channels(Optional Ultra DMA 66 Cable). Twin Headers for Four IDE Devices Including IDE HDDs and CDROMs.
- Support Two FDDs of 360KB, 720KB, 1.2MB, 1.44MB or 2.88MB.
- One ECP/EPP Parallel Port, Two 16550A UART Serial Ports, Two USB Ports, PS/2 Mouse Port, PS/2 Keyboard Port.
On Board Sound - Integrated AC97 Controller with Standard AC97 Codec.
- PnP, Full-Duplex, Sound Blaster 16 Compatible, Direct Sound Ready.
- Line-in, Line-out, Mic-in and MIDI/Game Port .
Expansion Slot - One ISA Bus Slots (One PCI Shared Slot).
- Five PCI Bus Slots (One ISA Shared Slot)
- One Accelerated Graphics Port (AGP).
- One Audio Modem Riser (AMR).
Plug and Play - Plug and Play Specification 1.1.
- Plug and Play for DOS®, Windows® 3.x, and Windows® 95.
PC97/98 -
PC97/98 Ready, PC99 Color Connector.
Power Management - Support SMM, APM and ACPI.
- Comply to Energy Star ˇ§Green PCˇ¨ Program.
- Supports Modem Ring-in Wake Up.
PCI - PCI 2.1.
AGP - AGP 1.0.
VRM - On Board VRM 8.4.
Battery - On-board Lithium Battery.
Others - CPU Frequency Multiplier Jumperless (Optional).
- Alarm Wake-up
- Bundle ˇ§PC-cillin 6ˇ¨ Anti Virus Software
Board Size - 185mm x 305mm, ATX Form Factor

[FJ]

Here I attach the mobo pic for clear view;

[patio]

At 300W that system is underpowered...

[GX1_Man]

And that is a low end, and elderly, board. Either of those may be important as well.

[FJ]

Hi patio & GX1_Man,
Thanks for ya replay.

Perhaps you may advise me what the right wattage to ON this kind of system. Your help are highly appreciated. Thanks.

Here I list what I intend to use;

64MB SDRam
HDD Maxtor 10gigs
CDRom Seagate 52x
Smart link modem
S3 Vergi /DX display card

FJ

[patio]

Here Ya Go

patio.  8-)

[FJ]

I 99.99% confident that this wasn't cause by PSU. Let's back to my posted earlier.

Anyway thanx to patio for the link.

FJ

[GX1_Man]

300 w is more than enough for that system. THe question is does the PSU function correctly and are the other components intact. The best way would be to try a known working PSU just to rule that out as a cause.  

How are you 99.9% sure the PSU is OK? Have you test it with a meter? Is it new and a quality brand name? If not, you cannot be sure.

[FJ]

Thanks for the replay.

I just swapped the motherboard to other system which is known good system and found that the same problem occur (hang after 20 to 30sec power on). That's why I'm so sure to say that this wasn't cause by PSU.

Beside, my computer knowledge is not so bright so, please advise if my way in determining the causes was wrong.

FJ

[Raptor]

Did you reinstall Windows?

Diagnose your RAM.

What else did you keep on the mainboard when swapping it? The CPU?

[patio]

Just because the system boots and then shuts down is no reason to rule out a faulty PSU...

[FJ]

What I was tried:

1) Boot from floopy (Bootdisk)
2) Boot from CDRom (Bootable Disk)
3) Enter BIOS Setup menu

Result, I can't play all above because my system totally hang once them start. I can't do nothing even move mouse cursor.

I'm never diagnose my RAM and when swapping it, I remove everything (RAM Stick, Processor, all Expension Card) only mainboard left.

aside to patio
I've no intention to rule out a faulty PSU but, I was tried swap another PSU into it and same problem occur. Please advise

FJ

[GX1_Man]

Go, Patio. Run with it......