Computer will not switch off

keyman134

Hi
Can anybody help me.
I have just finished installing a new copy of XP on a computer I have just built, but for some reason when I shut it down, the screen goes blank and I can hear the HDD shut down, but the PSU and Cpu fan still keep spinning. When I try to switch it off with the power switch, it doesn't make any difference, and if i push the switch again, the computer just boots up again. I am using an old Emachines case with an MSI KM2M-combo motherboard, AMD Athlon 2000+CPU, 512 DDR RAM. I have set the BIOS to power off, installed all the drivers I can find, and set windows to shut down using the power options in control panel, but all to no avail. I am now in a quandry. I am open to any other ideas.

456789

you mean it keeps going when you cut off power from the mains switch?

keyman134

sorry i forgot to say . turning off the mains power is the only way it will stop, but as soon as it is switched on again the power supply and CPU fan starts spinning, then I push the on button and it boots normally.

OneADay

Got your connections right, reset button and power button swapped over?

keyman134

Yes all connection as stated in the manual, and I have tried swapping the power switch connections ETC, all to no avail.

OneADay

From the sounds of the spec, it sounds very old.

If you can get the pc on the net - you could try doing some windows updates and see if that helps.

Power buttons usually restart the pc if pressed twice so that sounds okish.

Other than that only thing I can think of is putting on a different OS on it - linux and see what happens with that.

You might be better off getting a higher spec motherboard and cpu to be honest but if it comes to that - you might as well buy a new pc.

Taffybiker

If the PC starts up even partially as soon as mains power is applied there is something wrong. I have normally found this to be due to a dodgy motherboard - are you certain it was working properly before?

One thing you could check though, if the motherboard has a 20 + 4 power connector, are you using a 20 + 4 PSU?

sicker

I have always found that pressing and holding the power butten for about 10 seconds will swith the pc off.

keyman134

hi taffy
yes it is a 20+4 setup on the board and sicker I have tried holding the power button for 10 to 20 seconds and all it does is restart the computer ,it wont turn off

keyman134

Hi again taffy
I did test it on the bech before putting it into the case and it seemed to be working alright then, so any other ideas please.

keyman134

Hi again people
I have done some more checking and I have noticed than when my computer has "shut down", but the PSU and CPU fans are still running, the HD light comes on and does not go off unless i disconnect the power, then when the power is reconnected the HD light is still on(steady light,no flickering), until i press the power button, when the HD light goes out and then comes on as it boots, just as a normal system would. Very odd i think. Anybody got any idea as to why this might be.