Boot failure Please take a look at the computer boot failure, please consult

You can see if there are any burnt marks on the motherboard, whether the capacitor has burst pulp, if not, change the battery and power supply to see.

Let me tell you, there are two situations for the motherboard alarm. 1 is a memory issue. The second is the hard disk. Listen to your questions. The main thing is that the memory is loose. Affects the boot. At the time of detection. There is no memory effect, so it cannot be checked.

There are too many fault points you described, but judging by the phenomenon you explained that "the optical drive, hard disk, and many other hardware cannot be detected during the POST", it should be a power supply problem, so check the power supply of your computer first, maybe it is caused by the unstable power supply.

The blue screen is over, reboot to see if you can enter safe mode, if not, redo the system.

This is an illegal shutdown or other reason caused by the disk damage, please repair it (fix each disk or only fix the C prompted).

Built-in disk repair method:

The specific steps are as follows: select the drive letter c in my computer, right-click the right mouse to select the properties, select "Tools Start Checking" in the pop-up drive properties window, and select "Automatically repair file system errors" and "Scan and recover bad sectors", and then click Start, the scanning time will vary depending on the disk capacity and scanning options (after doing it according to the above method, a box will pop up, the point is, repair it at boot after automatic shutdown, win7 select the disk check button according to the plan).

Bad sectors on the hard drive will lead to corruption or loss of computer system files, computer failure to boot or freeze. Hard disk bad sectors can be repaired using NDD Disk Utility or Scandisk.

If the fault persists, please restore the system or reinstall it (it is still not possible to format the hard disk and repartition and reinstall it, if it doesn't work, you will have to replace the hard disk, or overhaul it).

Find a way to enter the system to repair the disk, enter, wait a while to try, boot and press F8 to select safe mode, PE, reinstall the system, and go to the repair there to help you.

If it only appears once, it won't come out next time, don't mind, it means that the system repaired the fault by automatically.

Wait for the self-test to pass, you can't shut down safely, it's no problem if you can pass, and if you can't pass, it's usually a bad block of the hard disk

Select Safe Mode, enter Safe Mode, enter the system, and repair the defragmentation with the hard disk tool.

1. First of all, we conduct a comprehensive check on the connection between the computer monitor and the host, and plug each connection back to see if there is a connection problem.

2. If the fault still exists, then we need to open the chassis to see if the chassis contains metals and other substances, causing a short circuit in the computer host circuit, and then we smell the computer to see if there is a burning smell, and see if there are damaged components around the motherboard and around the CPU.

3. After checking the whole chassis, there is no abnormality in the chassis, then we will dust the chassis.

4. If it can't be turned on, then use the minimum system method, unplug the data cable of the hard disk, floppy drive, and optical drive, and then check whether the computer can be turned on. Then connect the above devices to the computer one by one, when connecting a certain device, the fault will recur, indicating that the fault is caused by this device, and finally focus on checking this device.

5. If the fault still exists, it is likely to be the fault of the memory card, graphics card, CPU, motherboard, etc., at this time, we only need to plug and unplug these hardware, or replace it again, and try to find the cause one by one.

6. If the memory, graphics card, CPU and other devices are normal, then discharge the BIOS, use the isolation method, place the motherboard outside the chassis, connect the memory, graphics card, CPU, etc. for testing, if the computer can be displayed, then install the motherboard into the chassis for testing until the cause of the fault is found. If the fault persists, you need to return the motherboard to the manufacturer for repair.

7. When the computer is turned on and started, the system BIOS starts to POST (power-on self-test), and when a fatal error is detected in a device in the computer, it will control the speaker to send out a sound to report the error. Therefore, there may be a fault that the power is turned on without displaying an alarm sound. If the computer is turned on and there is no alarm sound, the fault can be checked according to the meaning of the BIOS alarm sound to check the faulty device to eliminate the fault.