Dell win7 system laptop suddenly shut down the cause and solution

Solution one:

1, first use an anti-virus software to comprehensively kill See if there is a virus, if you find out, directly kill the virus.

2, check if the system file is destroyed, click the Start menu - Accessories - Command Prompt - run as administrator, and then use the chkdsk command to try to verify and repair.

3, if the relevant machine software, first all directly to the uninstalled try.

4, if it is a driver problem, we can solve it by upgrading the driver. I suggest you download a driver wizard to detect the driver problem.

5, other problems caused by the computer automatically shut down.

Fault reason:

The general automatic shutdown may be caused by the high temperature caused by too much CPU fan dust. If it is, clean the CPU fan and heat sink dust, and add heat sink silicon. fat.

If this is not the problem, it may be caused by problems with the motherboard components or power supply, voltage instability, hard disk failure, etc., and the new hardware is not compatible. If you can't find the reason, you can recommend repairing. Repair, because automatic shutdown is not a small problem. In addition, a Trojan can also cause a system shutdown, but the probability is very small, try to restore the system or reload.

If you turn off or standby automatically without operating, it may be a problem with the settings. Right-click on the desktop and select Properties/Screen Saver/Power/Select from the drop-down list in the Power Scheme to select the one that suits your scenario. In the list below, turn off the monitor, turn off the hard drive, and system standby. For "never" apply by (or set the appropriate time).

Open Control Panel/Open Hardware and Sound/Power Options/Select to turn off the display (select Never or set time) /Select the computer to go to sleep next to the drop-down list and select Never or select the appropriate time (Win7 system).

Solution 2:

1. There may be a problem with the BIOS setting. Enter the BIOS to restore the default settings or take the motherboard's battery out, reverse the discharge, wait 5 minutes in the reverse Just go in. Purpose: The BIOS settings are restored to the default values, and the BIOS's cooling presets are automatically restarted or shut down.

2. If the computer automatically shuts down when using one of the application software, the automatic shutdown failure may be caused by the program software. Generally, the program software can be uninstalled.

3, then check the power supply, the power quality is poor, aging or power is too small, can not meet the power supply requirements of the computer accessories, can replace the high-power high-quality power supply, if the fault is removed, it is the power-induced automatic Shutdown failure.

4, then use the exclusion method, check the memory, graphics card, CPU, CPU fan, motherboard and so on.

5, check the memory, memory quality but off, poor heat dissipation, overclocking, different brands of memory mixing and CAS value settings are too low, etc. can cause the computer to automatically shut down, available test memory, and the BIOS in the right The memory parameters are adjusted accordingly.

6, check the motherboard, motherboard aging, capacitor failure or explosion, motherboard power pin, motherboard and chassis backplane short circuit, etc. can cause automatic shutdown, the motherboard can be taken out of the chassis to check or test, then Check the fan rotation of the CPU and the temperature of the CPU. Then check if the silicone on the bottom of the CPU fan heat sink is dry. If it is dry, clean the silicone on the CPU fan and reapply the good silicone. If the fan is not working properly, replace the CPU fan.

7. Cleaning method: It is a method to eliminate the fault by cleaning the dust of the components in the computer mainframe. Dust is one of the factors that can cause the computer to automatically shut down. Dust can cause component aging, pin oxidation, poor contact, and short circuit. For these faults caused by dust, it is generally more effective to use the cleaning method.

8. The power supply system is unstable, which can also cause automatic shutdown failure. Consider configuring a UPS backup power supply with voltage regulation function.