Several Fang Zhengwenxiang D430 computers in the computer room have system problems, do not recognize the hard disk, or after entering the system startup screen, suddenly restart, can not enter the system at all.
Check the online information, do not explain that this machine has such a problem, mostly say how to set the BIOS in the SATA hard disk mode, after setting, still do not recognize the hard disk, there are several recognize the hard disk, but into the boot screen on the restart, several boots are like that, there is no exception. To tell the truth, Fang Zhengwenxiang D430 computer has been old, the memory is still 2GB capacity, if you install 64-bit Windows 7 is not OK, the running speed is not as fast as 32-bit Windows 7, but the computer in the computer room has no need to upgrade, the main or leader does not want to upgrade, you can only install 32-bit Windows 7.
Boot with a USB stick, be able to enter WindowsPE, partition, format, reinstall the system with Ghost, everything goes smoothly, but when you start up, there is no recognition of the hard disk. Can't boot from the hard disk, adjust several options in the BIOS, close all other boot items will not work, and the network card boot will not shut down at all. This machine is a customized machine, many BIOS options can not be changed, of course, can not let the BIOS recognize the hard disk.
There is no ready-made information on the Internet to refer to, the ready-made options in the BIOS cannot be changed, and the changed ones do not work, and the machine seems to have entered an endless cycle. I thought it was a hard disk failure, but after changing several hard disks, they were partitioned and formatted, and the MBR master boot record was rewritten, which still didn't work. It seems that it is not the hard disk that is wrong, the problem should be on the motherboard. Observe the capacitors on the motherboard, all are good, there is not a bulge, nor a crooked one. Well, the BIOS does not recognize that the failure of the hard disk must be a problem with the motherboard BIOS itself.
Set the Native IDE mode and AHCI mode, and neither the hard disk can be recognized. Buckle off the motherboard battery, reverse, discharge, and then install, the failure is still the same. Therefore, the data is cleared in the BIOS, and after startup, it still does not work. It is reasonable to say that emptying the BIOS should have been able to solve the problem of not recognizing the hard disk, and the hard disk has been tried on other machines, which is good in itself, and it is impossible not to be recognized.
So, installed a package of some rogue software Windows 7 system, boot when there is a turnaround, display two lines of English text, which has the word PCI-E, and then appears the network card boot interface, the interface has 10 seconds to choose the clone of the word, are English text, the residence time is ten seconds. Immediately after that, it entered the system startup screen, and then entered the screen of installing the system, and the direct installation was successful. The other hard disks are hung on this machine, can be started, is the encapsulated Windows 7 system rewritten bios?
Of course, it is impossible, but still did not understand the BIOS does not recognize the hard disk and suddenly recognize the problem of hard disk, can not always be reinstalled every machine, right? Even if you reinstall it, you may not be able to recognize the hard drive. Try several other machines that restart normally to the start screen, still the BIOS can not change some options, directly select the "Load default value" in the BIOS, clear the BIOS data, restart, actually can smoothly enter the system, no longer restart for no reason. Could it be that the BIOS is emptied?
Perhaps, in the same way to empty the BIOS data of several other machines, get the same result, can avoid restarting for no reason, directly into the system, stable operation. That is to say, after emptying the BIOS data, the BIOS recognizes the hard disk, boots from the hard disk, and will not restart for no reason. And do several other hosts that do not recognize the hard disk at all also use this method to enter the system?
The same method was used to empty several other hosts that did not recognize the hard disk, but after the restart, they did not receive the desired effect, or did not recognize the hard disk, and could not enter the system at all. Then, all methods of reinstalling the system are ineffective. There must be something wrong with the BIOS, and you can't always re-burn it, right?
After reviewing the entire repair process, it will be found that after emptying the BIOS, the computer that enters the boot screen and restarts will be repaired, while the computer that has not been able to start will not be repaired. Is the BIOS simply difficult to remove? Looking at the motherboard, this is not the case, this machine does not have a dual BIOS design and does not automatically restore bioscope settings. You can only empty the BIOS and shut down and go out to run errands. Come back to restart it, it actually became, the BIOS recognized the hard disk, smoothly entered the system, and did not restart for no reason.
It turned out that after emptying the BIOS, it was necessary to shut down the computer, completely power off, and then turn on the computer, so that the BIOS recognized the hard disk by itself, which also solved the failure. In this way, several other machines were repaired and repaired smoothly.
Then, Fang Zhengwenxiang D430 does not recognize that the failure of the hard disk is not a hardware failure at all, but a BIOS setting problem. After emptying the BIOS data, be sure to power off and restart again to let the BIOS recognize the hard disk. Tossing for half a day, is to restart the noisy, you need to empty the BIOS data and then power off, and then boot the machine will be effective. Perhaps many of these problems can be solved in this way.