Why does my laptop turn off but restart! 20

Well, because my computer also has this problem, just let me wake up from the sleepy state of staying up late, I thought the computer was evil, let me tell you how to solve it.

You can find your computer"Device Manager"If you're vista, then open it first"Computers"And then point again"System properties"Then you can see it"Device Manager"Click to find it"Network adapter"My computer has three network connections, one is Bluetooth, one is wireless, one is broadband (I can't describe it), and then click on the broadband connection method, and it will pop up a box"Advanced"In"attributes"There's one below"Wake up from the shutdown"Change it to:"off"That's it.

I just bought my computer, and this problem came up, and I'm also researching it, and I'm going to ask where it was sold today, and I hope it can help you.

1) Reinstall the operating system first, don't install software, patches, drivers, etc., and see if there is still a problem with booting? If you don't install drivers, patches, and software step by step, and find something that isn't suitable, don't install it.

Please note: If you restore the system or reinstall it, when installing drivers, patches, software and other things, be sure not to install the things that affect your accident this time, otherwise it will be restored or reinstalled in vain.

2) In terms of hardware, such as whether there is a problem with the hard disk, memory, etc., whether the temperature of the CPU and other hardware is high, if it is caused by hardware problems, it is recommended to overhaul it.

I guess there is a problem with your new installation system! I've also encountered the screen dropping out after a point of shutdown at "You can now safely unplug the power!" "You have to unplug it yourself to shut it down! In the end, if you can't stand it, you can use another disk to reinstall the system, and the problem will be solved.

Your problem is not small, you should take it to Lenovo's customer service and let them solve it. If you can't reinstall the system, it's likely to be a hardware problem. Or, you see if your drive or something is installed.

Use the original driver, don't use the ghost system, get an XP plate to install.

Hope it helps!

In the Network Connections Manage Network Connections Local Connections properties Configure Advanced Options, set the Wake-up function to 'None'

Or just unplug the network cable.

That's the right solution.

Brand machines should be backed up, that is, one-click restoration, you can try, it should be able to solve it, if it's a hardware thing, then repair it.

System file corruption. Overwrite install or reinstall.

1. System file corruption. Overwrite install or reinstall.

2. Viruses. Trojans.

Control everything your computer from remotely, including getting your computer back up. Remove viruses, trojans, or reinstall the system.

3. Timing software or scheduled task software works. If you're in the scheduled taskbar.

When you set up to restart or load certain workers, the computer will start up again when the timer comes.

4. The power supply of the chassis is insufficient, the DC output is impure, and the dynamic response is sluggish. Now replace it with a high-quality high-power computer power supply.

5. Poor thermal stability of memory, chip damage or wrong settings, and the probability of system reboot caused by memory problems is relatively large. Replace the memory.

6. The CPU temperature is too high or the cache is damaged. Mask L2 (L2) or L1 (L1) cache in CMOS, or replace CPU exclusions.

General workaround:

1.Examine. CPU temperature.

Whether it is too high, if it is too high, it means that the CPU does not dissipate enough heat, and it is recommended to clean or replace it.

CPU fan.

2.Ignorance. XP system.

How,2000 system inside a system security self-protection,If it is illegally shut down,,He will automatically restart,Suggestion:My computer (

Right-click. --Properties--- Advanced --- Boot and Failback.

Of course, there are also system issues to consider.

3.The hardware side is also possible:

The power supply is broken. The voltage is unstable.

Plug sitting, joint acceptance is poor.

There is too much dust inside the case.

There is also poisoning (phenomenon: the computer runs the program slower than before, after pressing ctrl+art+del, there is a process.

Unknown process.

Inexplicable ads or messages always pop up, the anti-virus software in the machine cannot be opened, or programs or files that you have not seen or installed appear in the local disk. )

If none of the above is resolved, it is recommended that you go.

Computer City. or professionals.

In this case, there are many reasons, you can try the following methods to solve it:

1. Go to the BIOS, in the power management menu, see if the item is "Enable" (default), if so, change it to "Disable".

2. Right-click on my computer and select "Properties - Advanced - Startup and Fault Recovery - Settings", remove the "" before "Auto Restart" in the "System Failure" in the open dialog box, and press "OK".

3. Open Control Panel - Performance & Maintenance - Power Options - Advanced Power Management - Check "Enable Advanced Power Management Support" and press "OK".

4. Sometimes unplug the network cable first when shutting down for troubleshooting, which may be caused by the quality of the network cable or the fault of the interface.