Power supply fan runs at increasing high speeds as soon as the power cord is plugged in. PC not booted up when it does this. The computer only displays the bios information and for awhile nothing would show on the display.

Try this fix:-

This problem was on a Gateway NV52 running Vista Home Premium (64) and this is how it was resolved, with the help of their tech support:

1. Turn off computer and unplug power cord.

2. Disconnect all external devices

3. remove battery

4. press power button and hold for 10-15 seconds

5. plug power cord back into computer and press power button.

6. Check LED's and listen for power supply fan.

7. If LED's are on or power supply fan starts spinning, watch for boot screen

8. If computer begins to turn on, turn it off.

9. Reconnect battery and external devices.

10. Press power button and make sure computer starts.

If you unplug the power cord from the wall and the PSU, then flick the little red voltage switch on the back up and then back down again, plug it back in and it should work again

clean your fan. check your power supply. if your power supply is good. check the memory module.

Very well could be overheating or powersupply problem. Most Definately Hardware related. You can try opening up the case and blowing air into it from compressor. (Make sure to do this outside away from clean items). Also, check CPU fan and heatsink to make sure fairly clean. CPU fan may also be old and need to be replaced. Don't put case back on and try again. Look at CPU fan to see if moving (or struggling). If computer stays on longer then CPU fan most likely the problem. If off in same time as before then most likely the main power supply problem, in which case the only way to check this is to replace the power supply. Hope this helps, Best Regards,

Generic response.

As I understand your question, your fan is tunning when your computer is off or asleep or hybernating. This is only a llittle unusual ...

Bear with me ...

Many fans in modern computers adjust their speed to meet the needs of the computer. They slow down when there is not a lot of heat and speed up with there is increased heat.

It is very important that you not disrupt the air flow within a computer bu leaving the side cover off, for example.

If heat is a problem in your situation, you can probably add a second fan to the back of your computer.

Very important that your computer can breathe. You May want to check inside for dust and lint. clean with care- Static electricity KILLS delicate circuits.

Check if the capasitors on the motherboard are "swollen" which would mean the motheroard is KAPUT. Check if there is a modem in the PCI slots which often shorts the motherboard (when it has become faulty) ... remove the modem. Try booting again. If not succesfull make sure the POWER SUPPLY workls correctly by replacing it with another working one..... If no joy... there are still one or two other options. Let me know If you still have a problem and I will give you more options to check on

system halted my pc help

Change the setting in the BIOS menu. reboot your computer.. when you see the dell logo.. press F1 (or F2 if F1 doesn't work) button until you see the BIOS screen. Check for fan options and change it

Try these steps.
If Power supply light does not turn on (or no power supply LED)
Perform the following steps, in order, until power is restored or it is determined that there is a hardware failure:
NOTE: If the Power Supply fan spins when the PC is turned on but the light does not come on, it is possible the LED is defective. If this is the case, use the section Power supply light comes on or flashes .
1. Disconnect everything from the PC, including the power cord.
2. With the power cord disconnected, press the power button on the front of the computer. Plug in the power cord and test to see if the computer can turn on. If not, continue using these steps.
3. Replace the power cord with another power cord, like the one used by the monitor.
Test to see if the computer can turn on. If not, continue using these steps.
4. Ensure that the voltage selector switch is on the correct setting, 115V for North America.
5. With the power cord removed, flip the red voltage selector switch to the opposite position, wait about five seconds, and then switch the red voltage selector switch back to its original location.
This ensures that the voltage switch is engaged and set correctly for your country/region.
6. Plug in the power cord and test to see if the computer can turn on. If not, continue using these steps.
7. Plug a lamp into the same outlet to see if the wall outlet has power. Try the computer in a different outlet in order to eliminate the outlet as a possible source of the issue. Test both to see if the wall outlets have power.
8. Remove all extension cords, power strips, surge protectors and any converters that remove ground. Plug the power cable directly to the wall outlet. Test for power. If this fixes the issue, find the device that is causing the issue and do not use it.
9. Use a vacuum cleaner to remove the build-up of dust from the power supply fan vent holes. Make sure that the PC is turned off and that the power cord is plugged into a grounded outlet. Only use the end of the vacuum hose near the outside of the fan entrance.
Plug in the power cord and test to see if the computer can turn on. If not, continue using these steps.
10. If all of the above steps have been tried and the power supply light remains off, use the steps in the next section, use the next section Power supply light comes on or flashes , to reseat the cables and check the power switch connector.

Hi jderek4, try this. locate the toggle switch on the back of the power supply. Just find it do not flip it.
Plug the PSU's power cord into the PC. Just as you got a good connection & the PC begains to power up move the toggle switch to it's other position. The PC should power off that very second.
If the PC does not shut off than the PSU is bad. If it did shut down wait a few seconds. Press the cases power on button. The PC should start to boot up. Let it finish loading. Click the start button & choose to shut down windows. The PC should shut off.
Yes? If not than your back to (bad power supply). Swap it out.

Mike