Computer don't boot, it make noises from fan and don't display anything, power led is yellowish red

HP server ML350 G3 won't boot, red internal health LED
2004 time stamp in the manual, so is 15 years old, (a relic really)
and old Generation 3.
1: does the 2 fans blow, 1 in PSU , and CPU ? this be first.
sounds of that is first or you have no power or PSU is bad.
(most the time)
2: does the screen show anything, at all?
like (no signal, no sync, vga cable not connected, or the like?)
or is the screen dead,. 100% dead
ever change out the RTC coin cell inside, they don't last this long,
did you know that?
14 year old coin cell is impossible to be good. a $2 fix too.
if the coin goes bad the BIOS goes nuts, due to loss of data
in the NVRAM the coin cell powers.
replace that then do a BIOS reset, and now it ill boot to HDD 0
if and if HDD is good and if the OS is not corrupted, none stated.

Open the case and boot up. There should be a red internal indicator inside as well. That is your true failure.

Computer does not boot up The problem maybe the RAM, it is faulty or just needs reseating to make proper electrical contact.
Reseat the RAM and then boot up your laptop. If it still does not boot up then remove the RAM module/s and take them to your friendly computer repair shop and get them to test the RAM for you.

Can you hear any fan or drive sounds? If you don't hear anything at all when you try to turn the laptop on, no little LED's light up, the problem almost certainly isn't related to the hard drive. So if you don't have a live screen, start with the LCD troubleshooting flowchart, and if you don't have any activity at all, start with the power troubleshooting flowchart. Even if the hard drive has failed at the electro/mechanical level and won't spin up, this wont prevent the LED's on the laptop from lighting up, or the LCD from displaying the BIOS information and complaining about the lack of a boot device.


Ford F150 Body Kits

Perform a Hard Reset Do these actions first to clear all temporary setting before troubleshooting the problem.Disconnect all peripheral devices and remove all USB devices and media cards.Disconnect the AC power adapter, remove the battery, and then press and hold the power button for at least 15 seconds to drain residual charge.Reconnect the AC power adapter (do not connect the battery), press the Power button and look for the LEDs to blink or glow, and listen for the sound of a disk drive and fan turning.Perform each recommended corrective action and then attempt to restart the computer.Symptom 1: LED lights do not glow, display is black, no fan or drive sounds are heard, and computer does not startIf LEDs do not glow or blink when AC power adapter is attached and power button is pressed, there is no power available to the notebook Check AC adapter wiring and power connection to the notebook Connect a different AC power adapter and remove battery, then restart notebook.Connect a different battery and disconnect AC power adapter, then restart notebook Symptom 2: LEDs blink or computer beeps but does not start Blinking LEDs or beep tones indicate a hardware failure during the pre-start up testing Count number of blinking LEDs or beeping tones to help with diagnostics testing Symptom 3: LEDs glow, fan noise may be heard briefly, display remains black, and computer fails to startup or boot Usually occurs if a component is installed incorrectly, or there is a device conflict or failure Connect an external monitor to check if the problem is the built-in LCD display or graphics card Remove all CD/DVDs, SD cards, USB devices, peripherals and do a Hard Reset If memory or hard drive components were replaced, reinstall original component Remove memory modules and replace one-at-a-time Remove and reseat hard drive If possible, turn on power, press F10 to enter BIOS mode, and run Memory Test and Hard Drive Test On newer notebooks, turn on power, press Esc to enter UEFI mode, and run Memory Test and Hard Drive Test If possible, turn on power, press F8 to enter Windows Advanced Boot Options , and select Repair Computer option, or enter Safe Mode and run Memory Diagnostics If all other methods fail , but computer can boot to BIOS, use recovery disk to recover the computer to original condition Symptom 4: Computer may display an error message on a black screen during startup or boot Search www.microsoft.com for terms in error message Search www.hp.com for terms in error message

If possible, turn on power, press F10 to enter BIOS mode, do the corrective actions listed under Symptom 3 to run memory and hard drive tests.

Symptom 5: Computer displays a blue screen or continually re-starts After an error message is displayed, you can usually bypass the error and continue to run the notebook in Safe mode to install an updated BIOS or driver.

• Search www.microsoft.com for terms in error message.
• Search www.hp.com for terms in error message.
• If possible, turn on power, press F10 to enter BIOS mode, and run diagnostic Memory test and Hard Drive test .
• If possible, turn on power, press F8 to enter Windows Advanced Boot Options , and do one or more of the following:
  • Select Disable automatic restart on system failure to view error message.
  • Run Repair Your Computer .
  • Run Last Known Good Configuration .
  • Select Boot into Safe Mode and then select Run a Microsoft system restore .
  • Select Boot into Safe Mode and then select Uninstall recently installed programs .
  • Select Boot into Safe Mode and then run Windows Update .

Symptom 6: Computer displays the Windows logo screen and stops responding If no error message displays, turn on power, press F8 to enter Windows Advanced boot options ,and select Disable auto-restart to view error message.

• Search www.microsoft.com for terms in error message.
• Search www.hp.com for terms in error message.
• If possible, turn on power, press F10 to enter BIOS mode, and select Restore the BIOS defaults (F9) .
• If possible, turn on power, press F10 to enter BIOS mode, and run Hard Drive Test .
• If possible, turn on power, press F8 to enter Windows Advanced Boot Options , and select Last Known Good Configuration (Advanced) . .
• If possible, turn on power, press F8 to enter Windows Advanced Boot Options , and select Boot into Safe Mode and then Uninstall recently installed programs .

Update Computer After Resolving A Problem When the computer starts into Windows normally, you should install the latest updates and patches to prevent other start-up problems.

I had a problem like this you either A. Dont have enough power to power up your computer B. Motherboard has friend or died or last the graphic card could not be working.

Test your PSU or replace it if your power supply units fan is not working your PSU is faulty

One bad lead can cause a computer to continue on a cycle or to shutdown or fail to detect/ boot up a computer hard drive

Test all leads that attach to your hard drive including electrical extensions,IDE,SATA

the leads from your ((motherboard to your hard drive)) make sure they have a secure connection and are not faulty or just replace them there probably old and faulty
make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty even the electrical extensions or just replace them they are probably old and faulty a computer needs its connections to have an end so any faulty leads will end up with a computer error

hope this will help don

Instructions

1. 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.
   
   Effect & 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.
   
2. The BIOS queries various hardware components used for the startup boot process.
   
   Effect & 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 go out.
   
   Or
   
   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.
   
   Or
   
   A series of beeping tones is heard. The sequence of beeping tones indicate a specific error code.
   
   If 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.
   
3. The BIOS loads the basic input (keyboard) and output (advanced LEDs / display screen / boot drives) devices into memory.
   
   Effect & 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.
   
4. The BIOS loads the Windows operating system and starts the services that allow low-level control of all of the background operations.
   
   Effect & 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.
   
5. 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.
   
   Effect & 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.
   
   Or
   
   A black screen appears and the computer attempts to restart.
   
   The Windows self-check has detected a software conflict that must be corrected.
   

If a PC suddenly fails to boot properly, you should perform a hard reset as the first action. Performing the hard reset will correct many problems. If the computer still does not start properly, select your symptom from the list below to guide you to the recommended corrective actions.

1. Disconnect all peripheral devices and remove all USB devices and SD media cards. You want to test the computer not the accessories!
2. Disconnect the AC power adapter, remove the battery, and then press and hold the power button for at least 15 seconds to drain all residual power and restore default startup settings.
3. Reconnect the AC power adapter (but do not insert the battery), Press the Power button, Look for glowing LEDs near caps lock and num lock keys, and Listen for sounds of a fan or other moving parts turning.
4. If the computer does not start, the LED lights do not glow, and the display is black, you can perform one or more of the following actions to resolve the no power issue.
   • Verify the computer is receiving power from the AC adapter . Verify that the AC adapter is not damaged and is connected correctly to a working wall outlet plug. Verify AC power is connected to the system board by examining the AC adapter, wiring, and pin connection for damage. The keyboard LEDs will glow when AC power is connected to the system board. Damaged components, like the AC adapter or the pin in the power connector, may require an HP-certified repair.
   • Use a different AC power adapter . If you have access to a different AC adapter or power pack that is designed for the computer, connect it to the notebook and try to start the computer. If you own or have access to more than one notebook, verify that you are using the adapter which belongs to the notebook. CAUTION: Using a power adapter that does not meet the power requirements or has the wrong type of connector may damage the computer. On newer notebook models, connecting the wrong adapter to the notebook may cause the power LED lights to blink but not power the computer.
   • Remove the battery and boot on AC power only . A discharged or defective battery may prevent the AC adapter from supplying enough power to start the computer. To verify that power from the AC adapter is available for PC; remove the battery, connect AC power adapter, and press power button. If available, try using a different AC adapter, that is rated for the PC, and repeat this test.
     • If LEDS do not glow and the fan or hard drive do not spin, AC adapter may need to be replaced.
     • If LEDs glow and PC boots, the battery may need to be replaced.
     • If LEDs glow but PC does not boot, go to LEDs glow, fan is heard, but display is black or blank section.
   • Remove the AC adapter and boot on battery power only . A defective AC adapter may not charge the battery and prevent the computer from booting on battery power only. To verify battery power available for the PC; connect AC power adapter, allow battery to charge for 30 minutes or more, disconnect the power adapter and press power button. If available, try using a fully charged battery, of the same type, from another computer and repeat this test.
     • If LEDS do not glow and the fan or hard drive do not spin, battery may need to be replaced.
     • If tests of both the battery and the AC adapter fail, there may be a problem with system board requiring service by HP.
     • If LEDs glow and PC boots, the AC adapter may need to be replaced.
     • If LEDs glow, but PC does not boot go to LEDs glow, fan is heard, but display is black or blank section.

On a computer mainboard there are usually a number of connecting pins right next to one another called RESET, POWER LED, HD LED etc.
The power led often leads to the green LED next your power button to show that the juice is available and on. The cable that leads to the red LED is usually the HD LED which shows that a disk drive is being accessed.
Since the red LED is active, one of your disks is probably being accessed and that's where the problem is. Either the disk is damaged, the cable is still not inserted properly or the bios is having problems identifying one of your disk drives.

1) Power the computer off. Take the power cable out. Make sure that you are grounded (have no static charge on your body). Take all of the cables between your mainboard and your disk drives off.
2) Plug in one of your disk drives, reconnect the power cable, switch the power on and watch the monitor. If all goes well you will see that the bios has recognized the disk drive and will simply display a message that the operating system for example isn't available or no harddisk drive is present (if you connected something other than a harddisk drive).
3) repeat this process with the other drives, powering the pc completely off each time and then adding a new disk drive.
4) once you've reached the point where the red LED drive is displayed but no message is available, you've found the culprit that is keeping your pc from booting properly. Hopefully the cable has just been stuck on improperly or the cable is damaged (Check it), rather than you having disk drive damage.

Good luck!