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The power supply is receiving power from the source but is unable to
properly distribute it to the components. This means that either your power supply is bad or the motherboard. Try removing all devices attached to your computer and check your USB ports to see if they are damaged.
Enough power to light LED lights, and spin fans, but Not enough power to turn the Processor on.
1) ALL of the LED lights on at one time, use less than 1 Watt of power.
2) EACH fan uses 2 to 3 Watts.
3) A typical Processor can use 51 to 125 Watts. Just depends on what Processor it is.
No Processor operating, No computer. No computer operating, No signal on the monitor. NO video signal to the monitor from the computer)
Need guidance in replacing your Power Supply, please state in a Comment. Need guidance in choosing a correct Power Supply, I would be happy to give a few references for you to look at.
(Do you have a KNOWN to be good, Compatible power supply around that you can use for a test? Perhaps in some computer tucked away in the closet, etc. Maybe a relative or friend has upgraded to a better computer, and has an unused one you could borrow the Power Supply from)
Several different hardware failures can cause this type of issue. The
first step that should be taken is to verify that there are no lose or
disconnected wires coming from or going to the computer. If when
starting the PC your getting no power than there is an issue with the
power supply. If you are getting power to the PC than you should listen
for the beep code on start up. 1 beep after starting the computer
signifys that the power on self test (Also known as the POST) has
completed with out issue. When getting any other type of beep code you
should research the meaning of the code. Beep codes differ from company
to company. The best way to identify the meaning of a beep code is to
type the manufacture, model and number of beeps into Google. Another
possible issue is that your hard drive is corrupt. If this is the case
than your computer will pass the power on self test(POST) but will have a
message like MBR not found or one of many other errors. If you are
getting an error than it is also a good idea to research the error to
determine the proper fix. If the PC seems to boot correctly but there is
no image on the screen than the issue may be a result of a bad video
card. In that case the video card will need to be replaced.
Based on the way you described the issue I would say that it is most likely the power supply that has gone bad. This issue is very common and for most computer a new power supply will only run you about $20-$30.
I hope that information above has helped is some way. If possible please rate this solution.
ok first remove both the keyboard and mouse
and restart the computer and see if it says anything about no keyboard or mouse present if so this is good now just turn off the computer and install the mouse first and reboot and see if the mouse is able to work and than do the same for the keyboard. please try these first and please let me know how this goes, there is more that we can do if needed ok please dont forget to rate this for me
best regards mike
Believe it or not, it's due to a weak power supply. More specifically, weak voltage rail/s caused by failing Electrolytic Capacitors.
A bad computer power supply is about 70% of computer failure.
ALL the light use less than 1 Watt. EACH fan uses 2 to 3 Watts.
A processor uses 55 to 125 Watts. Depends on the make and model.
Since the power supply is weak, it doesn't have enough power to turn the processor on. No processor, nothing to find the Boot record on the harddrive. Nothing to get the Operating System going. (Example: Windows XP)
No computer running, there is no signal to the monitor. Just enough power to light lights, and spin fans.
I had the same problem with 2 of these systems.
You need to replace the power supply.
I know it's a weird problem. It seems like it shouldn't start at all.
But it solved the problem with both of the systems.
If its an USB keyboard and mouse, try to insert keyboard in upper port and mouse in lower port USB.
Sometimes when they Both are inserted in port in same line, they are unable to Fetch equal amount of power.
Try this and do restart your computer, after inserting them in USB ports.All the Best
If the BIOS it self is not opening means that it is not getting started,at the timing of power startup it just goes off with out showing anything the issue might be with the BIOS cell check that out otherwise there might be any issue with the BIOS than u have to consult with the vendor,
Now in second case where it is not working after the POST is done than might be the first boot sector has gone faulty you have to reinstall the OS.
ANd in if case it is giving a long beep before shutting down the issue might be with RAM check that out.
Inshort the issue might be with three things
1) BIOS cell (change the bios cell)
2) BIOS itself (consult vendor)
3) OS (Reinstall the OS)
4) RAM (Swap or change the RAM)
PLz do rate incase this info is important or giving u any benifit it helps us...
If you are currently, working on PS2 mouse port which is the error occurred as stated in your problem. Try to used other PS2 mouse which working on the other pc maybe there was a short circuit on your old mouse. If the problem persist, You can use the alternative way by using USB port to plug your optical mouse.
Try to look for ps2 to usb port converter in the computer stores maybe you can still used your old mouse.