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Thread ID: 9595	2001-06-06 00:40:00	Whole Computer	Guest (0)	Press F1

Post ID	Timestamp	Content	User
13686	2001-06-06 00:40:00	I push the power button on my computer, and nothing happens!!! help me!!	Guest (0)
13687	2001-06-06 01:18:00	I know it sounds stupid and I don't want to insult your intlligence but you should check that it is plugged in and switched on at the wall. You should also check that the power cable hasn't fallen out of the back of your computer. If this is not the problem, then open it up and check that the cable from the power button to the motherboard is connected if you have an ATX case. Also check that the switch on the back of your case (located on the power supply) is switched on. (This switch is not on all ATX cases.) If that doesn't work, check that the plug from your power supply to your motherboard is plugged in firmly and clipped in.	Guest (0)
13688	2001-06-06 11:34:00	depending on computer type brand etc you may have a setting in your bios that determines what action to take when the power button is pressed try holding the button down for 5 or 6 seconds then release if you hear a click during this process then your heading in the right direction. Now try a normal press once again. If you manage to get the machine running go to your bios and see whaty settings the power button has assigned to it (check you manual before you change anything). I cant remember just where you'll find this setting but have a hunt around I think its present on most ATX type PCs	Guest (0)
13689	2001-06-06 14:21:00	If the fixes given above do not solve the problem, check out the power supply as follows: First check to see if any lights come on when the computer is plugged in/turned on. If he lights are on then you may be in standby mode, and performing step 1 of the ATX fault-finding list may fix the problem. Secondly, you need to establish what type of power supply you have. If your computer shuts down Windows and turns off the power automatically, you have an ATX type. If not, you have AT. Physically the AT power supply has two single-row/10-pin connectors mounted adjacent to each other on the motherboard, while the ATX power supply only has one 2-row/20-pin connector. Also the AT has a cable (looks like a normal power lead cable) running directly to the power switch, while the ATX is soft-switched so the two wire lead from the power switch will be connected to the motherboard. Fault finding the ATX power supply: 1. Remove the power cord from the computer and reconnect it after waiting 20 seconds (this will disable any BIOS setting which puts the computer into standby if the power switch is not held in for 6 seconds when trying to turn it off).When you reconect you should hear the power supply switch on and the cooling fan on the CPU and power supply may flicker. 2. Measure the voltage between the case and the type of power lead which connects to your hard drive. On the black wires you should get 0 vdc, the red approx +5vdc, and the yellow approx +12vdc. 3. If no voltages are present, check that the 2-pin connector from the power switch is correctly connected to the motherboard. Also check the 20-pin connector is fully home and has no damaged pins. 4. If the motherboard is damaged, you may not get any voltages, but the power supply may still be ok. To test the power out from the supply: a. Turn off power and remove the lead from the computer. b. Remove the 20 pin connector from the motherbaord. c. Short the grey and purple contacts together. d. Short the green and any black connector together. Then plug the power lead back in. e. Check for the following voltages (vdc) between the case and named wire. Orange = + 3. 3, Blue = -12, black = 0, white = -5, red = +5, yellow = +1 2. Note: these voltages are approximate and may vary slightly. Fault finding the AT power supply: 1. Check the power connectors are fully home and there are no damaged pins. Note: When connected to the motherboard, the black wires on each connector should be closest to the center (ie. where the two connectors touch each other). 2. Check the power switch operation. CAUTION: As this switches 230vac, it is safer to disconnect power and use a ohmmeter for this task. Check that the similarly coloured wires (ie. black or brown) show a short circuit between them when the switch is made, and an open circuit when it is open. 3. Measure the voltage between the case and the type of power lead which connects to your hard drive. On the black wires you should get 0 vdc, the red approx +5vdc, and the yellow approx +12vdc.	Guest (0)
13690	2001-06-06 22:15:00	sorry ;) power cord had fallen out of socket on power supply!!! :)	Guest (0)
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