Think I got hit with a power bump. Fried the hard drive and power supply. The fan on the processer quit. No display. Replaced hard drive with a known good one. Replaced Processor and Power supply, still nothing.
If you have one of those generic motherboards with Intel chipset, socket 478, 2 or 3 PCI slots in a mini ATX form so, don't waste your time and buy a new one. Some time ago I replaced it with a cheap Biostar P4M80-M4 and is much better.
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Forensically always, by removing the platter and putting into a drive that is good.
what I would suggest you do it to get an external USB Hard Drive enclosure, and put the HD in there. Connect the USB to the computer and pray. If it doesn't work, put a new hard drive into it and set an automatic backup every couple or days. Power Supply Units need annual maintenance. I vacuum mine once a year and take them apart and wash and lubricate the fans every 2 years. Replace the fan after 6, they are cheap enough. But fans with ball bearings. When you do the vacuuming, do the CPU fan and heat sink and also the fan and heat sink in the video card.
PSU has a thermal fuse in it, but I would buy a new one. They are cheap too.
1. There is no hard drive or has a bad/failed hard drive
2. There is not OS (Operating System)
3. The Boot manager is corrupted
4. The Bios isn't configured correctly
That is all I can think of with your information.
What does the screen display during the process?
Does the computer make fan, or hard drive noise?
Was it working before?
If so what was the last thing you were doing?
First - re-seat the hard disk and reboot the computer. If the computer does not boot up then reboot and go into the BIOS configuration to see if the BIOS detects the hard drive. If it doesn't detect the hard drive then it could be faulty. Then the hard drive needs to be replaced in the computer/laptop, Windows installed and the computer or laptop's device drivers plus your programs etc. to get a functioning computer/laptop again.
When you press the Power button to start the boot process, the LED lights glow while the computer verifies that there is sufficient electrical power to activate the hardware.
& Solution: When you press the power button, the LED lights on the
computer do not glow or the LEDs blink briefly and then stop. There is
no sound of the fan or hard drive spinning, and the screen remains
blank. The computer will not start if there is insufficient battery or AC adapter power.
The BIOS queries various hardware components used for the startup boot process.
& Solution: When you press the power button, the LEDs glow but
there is no fan or hard drive sound. The LEDs may glow briefly and then
The LED lights blink, stop, and then blink a
second or third time, but there is no sound from the computer and the
screen remains blank. The sequence of the blinking lights indicates a
specific error code.
A series of beeping tones is heard. The sequence of beeping tones indicate a specific error code.
a hardware component has recently been replaced, or if the PC has been
jarred or shaken, there may be a loose connection to the memory chips
or hard drive which prevents the computer from starting.
The BIOS loads the basic input (keyboard) and output (advanced LEDs / display screen / boot drives) devices into memory.
& Solution: When you press the power button, the LEDs glow, the fan
or hard drive sounds, are heard, but then the boot process stops and a
black screen - with an error message - displays.
The boot check has detected a communication error or conflict with a hardware component that must be corrected.
The BIOS loads the Windows operating system and starts the services
that allow low-level control of all of the background operations.
& Solution: When you press the power button, the LEDs glow, the fan
or hard drive sounds, are heard, the HP or Compaq Logo displays on a
black screen, but then the boot process stops and a blue screen - with
an error message - displays.
The boot check has detected a hardware driver error or a software conflict that must be corrected.
Control is transferred to the Windows loader to initiate the display of the advanced settings in the Windows environment.
The Windows logo displays during this step.
& Solution: When you press the power button, the computer performs
all the steps in the boot process, but after the Windows Logo displays,
the moving Windows progress bar or the rotating cursor stops moving and
the boot process stops.
An error message may display on a screen with the Windows logo. In some instances, there is no specific error message.
A black screen appears and the computer attempts to restart.
The Windows self-check has detected a software conflict that must be corrected.
If the issue was the video card then there would be no display. If there was any display it would be discolored.
Try unplugging any removable media that's hooked up to the computer. After that try to boot it up.
If it still doesn't go anywhere then you most likely have a power supply issue on your hands. try unplugging an unnecessary components inside the computer such as any CD/DVD drives and removing any cards installed. Pretty much everything but the motherboard and the hard drive. If it still doesnt boot properly then you might either have to buy a new power supply or a new motherboard as long as you know your hard drive is good.
The thing si if it was an issue with the hard drive you would get an error message. If you seemed to have left out any error messages please post them.
if it sparked then something inside the power supply malfunctioned and that is the reason it wont work. You will need to replace it. Unlikely that it fried your board in the process. You can test this by swapping the power supply with one that you know works.
If you have changed the power unit and the computer is still not powering up, then it is quite likely there is a motherboard fault - probably in the power management circuitry, which expects the power_good signal from the power unit at a precise moment in the boot up process. A fault in the power management circuitry would prevent the computer from beginning its boot-up process.
Do the fans in the power unit come on when the computer is switched on? If they don't - this suggests a power unit problem. If the power unit fans do start working but the computer still doesn't boot, this suggests either a faulty or 'dry' connection (easy checked) or a motherboard fault.
If your computer 'works' but nothing is displayed, try pressing Control+Alt+Delete. If it then boots up it suggests a power unit problem. If not .. we come back to the motherboard again.
A low wattage power unit can cause the problem you describe. Every 128 Mb of Ram needs 4 watts of power. Add more for the motherboard (up to 30 watts..) then the floppy/hard drive/dvd etc .. If the power unit can't supply the necessary wattage, it won't boot. The older 250-300 watt power units aren't suitable for modern computers with XP/Vista. Ideally, you should be looking at 400 watts plus -it will tell you on the power unit.
Though to be honest, it does sound like a motherboard fault.
The only other thing that can cause a computer not to boot up (though it will begin the boot up process) are other faults ... When you switch on does it actually display anything on the screen .. and are there any 'beeps'? 1 beep indicates everything is ok .. 3 short beeps and 1 long beep indicate a memory problem (and the computer won't boot..). 8 beeps indicate a video problem (and nothing will be dislayed on your screen). Same with 9 beeps .. which indicates a bios fault - and the computer won't continue the boot process.
If you have nothing .. no power whatsover ... it comes back to the power unit/mainboard. If you're happy that the new power unit you have put in is ok ... suspect the motherboard. If you have access to any unwanted or 2nd hand motherboard ... connect that. If your computer boots up ... its the original motherboard at fault.
Alternatively, rather than replace bits and pieces at random to cure the fault, take your computer along to a computer shop. It will take them minutes to test it for you and identify the fault.
It can be a few things that are causing your issue; try these tips and see if any work for you: http://kb.iu.edu/data/aelm.html
If they don’t at least post what exactly happens when you try to boot, and we’ll help you further.