There are many reasons why computers can't turn on, whether they are laptops or desktops. What happens when they do not? Here are a few examples of how they can be restored。
How does the computer turn on? It's probably running into the bios battery. If so, replace the bios battery. If bios was not restored to the plant setting, the bios battery could also be discharged. If not, fix the system。
What's going on with the computer? How do we restore the system?
1. Switching on the f8-to-advanced option to release and select the "recently correct configuration" return repair
2. Please turn on the f8-entry to safety mode to restore the system with the system and restore it when you did not fail。
If the failure continues, using the system disk repair, the command prompt is entered into the sfc /scannow return vehicle (a space between sfc and/or between) and the original system disk repair system is inserted, and the system is automatically compared to the repair。
If the failure continues, then the pv in the bios will be sufficient to insert the system into the first starter。
Reloading of operating systems is recommended if failure continues。
If this is not the case, it is suggested that the option of repairing the installation be selected so that the system is repaired and the c disk program and documentation is not lost。
How does a computer turn on? When a computer is activated, a dead machine malfunction can be classified as a dead machine and a dead machine when it is loaded into the operating system. Specific methods of repairing the failure of the computer during self-censorship are as follows。
(1) first, to determine the pre-facing circumstances of the computer, if the computer was killed after removal, it may be that the computer was subjected to considerable vibrations during its movement, causing the interior parts of the computer to loose and poor contact to cause death. Open the trunk and put the memory on, so that the equipment, such as the graphic cards, can be secured again。
(2) if the death machine cannot be activated after the computer has been upgraded to the bios program, it may be that the bios program file that failed to upgrade or was upgraded is incompatible with the computer hardware and can be restored using the original bios program file。
(3) if the computer cannot be activated by a dead machine after setting the bios program, then the bios program can be restored using either the set bios settings modified or the “load bioos defauts” option in the bios program。
(4) if the computer cannot be activated after the cpu's overfrequency or upgrade, it may be due to the cpu's overfrequency or upgrade that the cpu frequency is restored or returned to its pre-upgrade state。
(5) if, on startup, the monitor screen tip “keyboard error (keyboard error)” or “hard disk installation fail” indicates that the equipment has not been completed or damaged, reconnecting or replacing the malfunctioning device is sufficient。
(6) if the screen tip “disk boot fairure” is lost or damaged, or if the hard drive partition table is damaged, it is sufficient to repair the system file or restore the hard drive partition table。
(7) if not for the above-mentioned questions, then check whether the case is clean, since as dust corrosives computer circuits and interfaces cause poor inter-equipmental contact and cause death machines, clean dust and equipment interfaces can be eliminated。
(8) if failure is not eliminated, the end-to-end substitution method precludes the compatibility and quality of hardware equipment。
What's going on with the computer
(1) the judgement is first based on the indication of the error. If the system file is not found on start-up, it may be lost or damaged. Maintenance can be performed by copying lost documents from other computers with the same system to the malfunctioning computer (some system files are not common)。
(2) when a blue screen appears on start-up, the prompt system file cannot find the specified file, due to the fact that the hard drive badness prevents the computer from reading the system file. Start the computer with a starter and run the "scandisk" disk scanning program to detect and repair the hard drive。
(3) in the absence of the above-mentioned malfunctions, the virus is first checked with poison-killing software and then the computer is activated in “safe mode”. If this cannot be started, it may be mainly due to system document damage and the re-installation of the operating system。
(4) if a “safe mode” is used to activate the computer, then exit the restart system to see if it is dead。
(5) if still dead, then restore the system with a back-up windows registration form (if the system cannot be activated, use the startup disk) and then see if it is normal。
(6) if the dead machine is returned, then enter " security mode " , open the " start/run" dialogue box, enter sfc and press enter, start the " system file checker " and start the detection system. If errors are detected, the screen will point to the name and path of the file, then insert the system cd, select the "return file " command, and the lost or lost file will be restored。
(7) finally, if the system is still dead, the operating system is re-installed。
The discharge of the bios battery (restoration of the default bios exit value) recommends the extraction of graphic cards, memory, cleaning of hygiene and the polishing of flash cards, memory, etc。
What's going on with the computer
At the time of the start-up check, the computer had started to activate the operating system. If dead, blue screen, or automatic restart occurs on start-up of the operating system, indicate that the partition table of the hard drive and the master guide record are normal, excluding the cause of malfunction such as damage to the hard disk table, damage to the hard drive master guide record and loss of the end sign of the hard disk partition. This is followed by the following diagnosis。
Step 1: start with a security mode to see if the computer can be activated or, if not, it may be infected with a virus, loss of system files, damage to the operating system, bad drives, conflict of hardware equipment or hardware problems, moving to 4 steps; if safety models can be activated, they may be caused by hardware-driven incompatibilities with systems, problems with operating systems or infection with viruses。
Step 2: the operation of the poison-killing software, if there is a virus, may be caused by the virus, the computer will be restarted after the poisoning and, if not normal, the operating system will be re-installed。
Step 3: if the virus is not detected, the system's own “system restoration” can be used to restore the system and, if the system is normal, the failure is caused by system damage. If the failure continues, it may be caused by the equipment driver's incompatibility with the system; the driver of equipment such as soundcards, graphic cards, webcards will then be removed and the driver will be installed on a case-by-case basis, and the computer will be restarted every time a device is installed to check which device's driver's failure and, when identified, download the new version of the malfunction device and install it。
Step 4: if it is not possible to start from the security mode, then re-install the operating system with a cd-rom. If the operating system can be installed normally, a seven-step shift can be made; if malfunctions occur when the operating system is installed, such as dead machines, blue screens, restarts, etc., which make it impossible to install the system, they should be caused by hardware problems or poor hardware access。
Step 5: next, clean the dust from the computer, clean the gold fingers of equipment such as memory, graphic cards, re-install the memory, etc., and then re-install the operating system, which, if properly installed, is exposed to malfunctions。
Step 6: if the system is still not installed, it may be a problem with hardware. The hardware failure is then checked in replacement and the hardware is replaced when found。
Step 7: if the operating system can be installed properly and if the malfunction is lost after installation, it is a malfunction due to damage to system documents。
Step 8: if the malfunction continues after the installation of the operating system, it may be caused by a hard drive or by the incompatibility of the equipment driver with the system. The computer is activated in a secure mode, and if it is not activated, it is the failure of the hard drive. Then you can fix the bad roads with the ndd disk。
Step 9: if the security mode can be activated, it is caused by the equipment driver's incompatibility with the system. The sound card, graphic card, mesh card etc. Are then removed and the driver is installed on a case-by-case basis and a start-up is installed to check which device caused the bug. Once identified, download a new version of the malfunctioning device driver and then install it。
These are a few common situations in which computers cannot open their doors and how they can be recovered, which can be tested against this paper if you encounter such problems。
