Different from the general electrical computer directly related to the power line, when you press the start button will not turn on or off can not be switched. Do not worry, perhaps the power supply and wire, first the basic hardware failures excluded. Then go to There are no other problems.
The basic hardware fault diagnosis
The wire connection: Note the connection between the computer and peripherals good contact, do not unreasonably plug cable; if the computer does not recognize a device, there may be contact of the wire.
Hardware status indicators: If the system is not working properly, the hardware status indicators can be observed.
After booting the system will automatically complete the self-test diagnostics, and boot code. The test sequence is roughly: cache, CPU, bus, memory, I / O devices. When the related hardware is detected, the corresponding indicator will light.
Hard drive, CD-ROM drive self-test from the front panel to see the corresponding light that the system have been identified to the above-mentioned equipment. On the contrary, if a drive self-test light is not bright, it may be that the devices have a problem.
Conducting wire connection (plug), the most important point is that, through the cable connection (or to be connected) device should be no power, should be the first device, turn off the power, then connect the cable (swap) operation. Otherwise, if a live cable connection can cause unforeseen damage to the equipment.
In addition, the host behind the SCSI interface card and network interface card on the self-test light to the normal state. Otherwise, you might have a problem of the interface card.
Usual, to develop habits of good use of computers, the system switch should strictly follow the following steps:
The boot sequence.
1 Open the power.
2 Turn on the power of external devices, such as monitors.
3 turn on the console.
Shut order:
Shut down the operating system.
Turn off the peripheral power supply.
Turn off the power of other equipment.
Turn off the power.
The basic hardware fault diagnosis
The wire connection: Note the connection between the computer and peripherals good contact, do not unreasonably plug cable; if the computer does not recognize a device, there may be contact of the wire.
Hardware status indicators: If the system is not working properly, the hardware status indicators can be observed.
After booting the system will automatically complete the self-test diagnostics, and boot code. The test sequence is roughly: cache, CPU, bus, memory, I / O devices. When the related hardware is detected, the corresponding indicator will light.
Hard drive, CD-ROM drive self-test from the front panel to see the corresponding light that the system have been identified to the above-mentioned equipment. On the contrary, if a drive self-test light is not bright, it may be that the devices have a problem.
Conducting wire connection (plug), the most important point is that, through the cable connection (or to be connected) device should be no power, should be the first device, turn off the power, then connect the cable (swap) operation. Otherwise, if a live cable connection can cause unforeseen damage to the equipment.
In addition, the host behind the SCSI interface card and network interface card on the self-test light to the normal state. Otherwise, you might have a problem of the interface card.
Usual, to develop habits of good use of computers, the system switch should strictly follow the following steps:
The boot sequence.
1 Open the power.
2 Turn on the power of external devices, such as monitors.
3 turn on the console.
Shut order:
Shut down the operating system.
Turn off the peripheral power supply.
Turn off the power of other equipment.
Turn off the power.
