M/B shutdown after 5 min.

I have a problem with motherboard shutting down after about 5 to 10 minutes operation. The following are the

details of system.

Syntax SV266Ad ver 3.1 M/B
Ath 2000 CPU
450 Watt Power supply
Fresh install of Win98SE
256 Megs DDR Ram
16 Meg Creative Video Card
Temp of CPU while in bios monitoring is 55 degree C and system will stay on until I go to O/S.
Have nothing in startup except AVG antirus-Adaware-Office 2000-Nero
System still did this without additional software above, just with O/S
CPU shutdown set for 60 Degree C.
Do not find anything on Syntax site.

It does not seem to be heat problem as it stays on in bios screen. Cant measure temp while system being

used. I will try and download some CPU monitor S/W so I can see what is going on while in use.

Any suggestions appreciated.

Bruce

 

CPU shutdown set for 60 Degree C
Agree with setting value, but .... is interface outputting correct values. If artificial high, would force shutdown. Possible disable for one pass. Your call / your CPU chip.

256 Megs DDR Ram .......
Temp of CPU while in bios monitoring is 55 degree C and system will stay on until I go to O/S.
Do you have a different stick you could substitute?

450 Watt Power supply
Not enough info to make any decisions / guesses.

 

If you are running at 55 degrees C just in bios it is most likely that you are hitting th 60 degree mard in windows. Just running windows the processor is doing more work than just sitting in bios.

If you put it together yourself you might want to redo the thermal gel. Might want to anyway. Might also add some more case fans for more air flow. Make sure ribbon cables and such are not blocking or hindering the air flow.

Check the specs on safe operation temps for the processor. I wouldn't be real comfortable running in the 60s but it is likely that it would be considered within safe limits. I use Asus Probe and my cpu limit is set to 70C. That is actually below the default which was 75C. Right now, under a light/medium load I'm running at 51C. You are running a bigger processor than I am (Athalon 1GHz.) so it would be likely for your normal temps to be higher.

<edit> Look to the AMD site for cpu specs.

 

Hi Bruce, (welcome to the BBS)

One thing in the short term that should reduce the temperature is to change the frequency from 133 to 100. That allow you to run without fear of overheating. On your motherboard you need to change the jumper JP2 from pins 2-3 to 1-2. If you have not worked inside a computer before, read the cautions at the front of the motherboard manual
http://www.syntaxusa.com/catalog/pr...id=95&osCsid=44f16bc0ee2ff82bcc490b38430e4054

I agree that if the BIOS temperature at startup (idle) is 55*C and the shutdown temperature is set at 60*C, that would be reason why it is shutting down when it gets to Windows. I set AMD CPUs at 70-75*C shutdown temp, but idling at 55*C is quite high and you should take steps to reduce it.

Before I replaced the thermal compound on the heatsink, I would investigate all other areas of the cooling system first. You can unscrew and remove the CPU fan from the heatsink. Remove any dust from the heatsink fins. Check the system fan(s) for signs of dust buildup, you can remove them and clean them with a soft brush. Check all the air intake vents are free of dust, you may need to carefully remove the front cover of the tower. (I did a Spring clean on this computer the other day, I would say that the air intakes were 80% blocked...the temperature has come down 5*C). Also check the air inlets and exhausts on the PSU. Take the case outside and use a can of compressed air to blow the dust out.

When the insides are clean, try running with the case open (and maybe a desk fan running onto the components). That will give you an idea of what temperature the CPU should now run at. Check all the fans are running and spinning freely.

Check for places to add additional case/system fans. They are inexpensive and install in minutes.

If the CPU temp then came down below 50*C I would be reasonably happy. I would expect that the CPU has an AMD supplied heatsink and fan, so I might doubt that changing the thermal compound would improve the temperature very much. If you decide to change the thermal compound, get a good paste like Arctic Silver 5 and follow the instructions at the Arctic Silver website.

You may find a "Spring clean" may work wonders.

Matt