computer is dead

We're going to feel confused when suddenly the computer that we use to die, to overcome these problems we can try some of these tips:
The steps that need to be done:

   1. Check to make sure the power cable is installed.
   2. If there is a UPS dg soft power switch, press the switch to turn on the UPS.
   3. Check the rear power switch on the power supply, if any.
   4. Check the voltage switch on the power supply, jgn try to start the system if the voltage switch is not installed correctly dg.
   5. Check the connections inside the computer.
   6. Check the power switch the computer to make sure this switch is not damaged.
Boot error messages (the system boots or flame but not at all / ntldr missing or Non-system disk or disk error, or similar message)
The steps that need to be done:

   1. Remove the existing removable disk from the drive and restart.
   2. Use a POST card.
   3. Run diagnostic utility.
   4. Check the BIOS boot order.
   5. Special Windows 2000/XP: If the configuration changes, boot with the boot disk. This boot file may need to be edited.
OS does not exist
Langkah2 needs to be done:

   1. Check the boot order in BIOS.
   2. Hard drives may be damaged. dg test diagnostic utility, hard drive utilities, FDISK, Partition Magic Drive Information, Disk Management in Windows 2000 or XP computer, or use a separate hard drive hardware tester base.

Computer locked when booting

   1. Check whether the plug and play BIOS dienabled.
   2. Drivers may be non-compatible OS dg, especially 2000/XP. Boot into safe mode and then check device manager, or use the Last Known Good Configuration or System Restore.
   3. Hardware devices may be non-functional. Check dg POST diagnostic card or utility, or off all the peripherals and occasionally replace