Troubleshoot Windows systems Top Ten most frequently asked questions

The fragility of Windows XP systems should be well known, and there will always be problems with the process, and there are occasional strikes such as system crashes, which make it difficult for users. Those system problems, for some novice or system operation is not familiar with the user some do anything, here we listed the Windows XP common problems and solutions, we hope to bring you help.

First, how to deal with the loss of password failure?

In order to security often set the password for the computer settings, but always appear forgotten password phenomenon, how to retrieve the system login password.

1.BIOS password forgot what to do

Q: I set the boot password in the BIOS, I can suddenly forget the password recently, how to clear the BIOS password?

A: When we apply for a password for the computer, we often ship to the forgotten password phenomenon, which prevents us from logging into the system. The general computer password is divided into two kinds of bios password, and the other is the Windows XP login password. The two methods of password setting are different, so the method of retrieving the password after the password is lost is different.

When we encrypt the BIOS, a long time if you forget the password, it is very difficult to crack. BIOS password According to different user settings are generally divided into two different situations, one is the setup password, in this way encryption, the system can be started directly, but only when entering the BIOS setup requires a password, and the other is the system password, in this way encryption, Whether you are booting directly or making BIOS settings requires a password, no password will accomplish anything. For the user to set the two passwords, our method of cracking is different. Here are some ways we can try to crack the BIOS password.

(1) Hardware method

When we set a password for the BIOS, if the security settings in the BIOS are in the "SYSTEM" state, this calculates

The machine will prompt us to enter the password when it is powered on. The system can only be run when the power-on password is entered. If we forget the BIOS boot password, we can only use the "discharge method" method to clear the password.

Open the main enclosure cover and locate the CMOS jumper on the motherboard. The jumper has 3 pins and is identified next to the jumper. Jumper caps are inserted on 1, 2 pins when normal. To the computer discharge, the CMOS discharge jumper cap from 1, 2 pins to 2, 3 pins, a few seconds before moving back to 1, 2 pins, boot can start normally.

Tip: The method of discharging is dangerous because it requires the chassis to be opened. If there is no discharge jumper, the CMOS battery is removed, with a metal object to the battery tank on the positive and negative short connection can also achieve the desired effect.

(2) Use Debug to clear password password

If you set the setup password in the BIOS security key, it is much easier to clear the password. When cleared, first boot to the DOS interface with the system boot disk. Run the Debug program on the DOS command line and enter the command:

-O 70 16

-O 71 16

-Q

Or

-O 70 10

-O 71 0

-Q

Restart your computer when you are finished typing.

Data access in the BIOS is achieved through the two I/O ports of 70 and 71. Port 70H is a byte address port that is used to set the address of the data in the CMOS, while Port 71H is used to read and write the data unit contents of the port 70H set CMOS address.

2.Windows XP login password lost what to do?

Q: For other users to enter their own XP user interface, in the XP user management set the login password, you can recently login found the wrong password, how to modify the XP login password.

A: Windows XP's powerful and friendly system interface is gaining popularity among more and more users, but its audit of user security is very stringent. If you forget the password you set, you can use the following method to crack the login password of your Windows XP system.

(1) Direct deletion method

If you have Windows 98 and Windows XP installed on both systems and you lose your Windows XP password, you can go to the Windows 98 operating system and then enter Windows 98 in Windows XP under the X:windowssystem32config folder (X: system drive letter), then locate the SAM file in the folder and delete it. Restart your computer to log in directly without a password, and then reset the Windows user login password.

(2) Dos Recovery method

If the current computer does not use more than one operating system, it is a bit difficult to remove it using the method above. In this case, we can delete the user's login password in the following way.

Boot Windows XP, when running to the "Starting Windows XP" Prompt interface, press "F8" key to bring up the system Boot selection menu, select "Command-line Safe mode". When the run is stopped, the "Administrator" and other user's selection menus are listed (for example, the other users in this example are ABC).

Select "Administrator" and press ENTER to enter command line mode. Type the "NET user ABC 1234/add" command here, which is a command that changes the user's password, and "1234" in the command is the new password after the change. If the user you typed does not exist, the system will automatically add the user. You can then restart the computer to log in with the new user.

Tips

You can also use the "Net 1oca1group Administrator Abc/add" command to raise the ABC user to Superuser and have all the permissions. Also note that the DOS method to crack the password, its user name is not in Chinese, and the partition should take the FAT32 format.

(3) Software recovery method

If you feel a lot of trouble with the above operation, we can recover it by software. There are many tools to crack XP passwords on the Web, and we can use these software to hack. ERD2003 (Download Address: Http://www.dgxyedu.com/erd.rar), this is a Microsoft launched a DOS password rewriting tool, using the software can be Windows2000, XP, 2003 system administrator password to forcibly modify. Then burn its software to a disc and use that disc to start the computer.

Using this disc to start the computer, the system will automatically load the ERD2003 program, followed by a similar to the Windows XP login interface, then you can enter the system. After entering the system ERD2003 will load the common hardware device, the hardware device after loading the program will scan the hard disk, and then pop up an installation System Selection window, here to select the installed system. Once determined, enter the ERD2003 main interface, and ERD2003 also provides a desktop that is similar to the Windows desktop. To change the password, click "Start" → "Administrative Tools" → "locksmith" to enter the Password Modification Wizard interface, first enter the user selection interface. If there are more than one Admin user in our system, select the username to change the password, then click the "Next" button to enter the "Select New Password" interface, enter the password here, then click "Next" and click "Finish" in the following screen. The button system restarts, and you can log in using the user name and password you just set.

Second, how to deal with the system often crashes failure

After the Windows system recovers, some unexpected problems often occur. After the system recovers the user most worries is the computer to appear the frequent freezing phenomenon. This will bring a lot of trouble to our computer operation.

1. What happens when the boot freezes?

Q: Recently, my system has some problems, the Windows XP system has just started when the boot screen is stuck for a long time, found that the progress bar needs to scroll dozens of times before entering the system to enter the system, and the system allows very slow, how to solve?

A: This happens because there are too many programs and service items loaded in the system. First, let's turn off programs that don't run automatically in the Startup group. First, in the Start-Run dialog box, type "MSconfig" command, open the "System Configuration Utility" dialog box, in the "Startup" item, we can see that the program in this area is the program that runs when the system starts, the program runs more, you can affect the speed of the system. If a program is on the system startup, we just need to cancel the check in front of the program.

In addition, we can use the method of modifying the registry to shorten the number of scrolling of the Windows XP startup scroll bar to speed up the boot. By running the Regedit command in Start → Run, open Registry Editor to find the Hkey_local_machinesystemcurrentcontrolsetcontrolsession managermemory Managementprefetchparameters, find the Enableprefetcher primary key on the right, change its default value of 3 to 1, and then restart the computer so that the scrolling time of the scroll bar will be reduced.

In addition, through the above operation, if the system shows that the boot screen is still very long, you should consider whether the system is infected with a virus, or a full scan of the disk, to check whether there is a bad channel disk. After the above operation, the system startup speed will be significantly improved.

2. What do I do if I notice a "VXD" error on startup?

Q: To save hard disk space, I recently uninstalled some infrequently used files on the Windows XP system, but the system sometimes prompts "*" after uninstalling and then booting. VXD "error, how is this problem and how to resolve it?

A: This error message occurs because a program is loaded in the Startup group of the Windows XP system

VXD file, when this file is uninstalled, the system startup is unable to find the software that causes this problem to occur. To solve this problem, we can open the Hkey_local_machinesystemcurrentcontrolsetservicesvxd key value entry and Hkey_local_ in the Registry Editor in turn Machinesoftwaremicrosoftwindowscurrentversionrun (RunOnce) key value entry, locate the corresponding VxD driver and then right-click the "Delete" button to delete the key value item. If the corresponding VxD file is not found in the registry, we can search for the file in the other key by finding the method and then delete it.

3. What happens when the system stops responding when the computer shuts down?

Q: Recently when shutting down the system, the system cannot shut down properly, but it is in a shutdown state for a long time, and sometimes freezes. This time we can only press the Shutdown button on the main box to shut down the machine, how to solve this problem?

A: The cause of this failure is mainly caused by the shutdown of some files of the system, such as the damage of the shutdown sound file, the fast shutdown function conflict, etc.

To resolve these issues, do not quit all running programs at first, and if you do not quit, quit these programs before you turn off the computer. Then in Control Panel, double-click the sound and audio settings option, open the sound and Audio Settings Properties dialog box, switch to the program events list under the Sounds tab item, locate the "Exit Windows" event, and then click the Play button if the sound plays correctly to show that the sound file is not a problem. If the sound file does not play properly, click the drop-down menu in the "sound" item below to select "None" to turn off the time of the event.

If the problem is still not resolved, we also need to detect the application of the problem, click "Start" → "All Programs" → "Accessories" → "System Information", click on the "Tools" → "DirectX Diagnostic Tool", in the popup dialog box we can detect the system, network, sound and other items. There is a problem with an item in the system at the time of detection, the DirectX Diagnostic Tool gives an error prompt, where we simply click the "Next" button and the system automatically fixes the error.

In addition, we need to turn off the hibernate feature and Advanced Power management features in the System Properties window, and of course the backend services of some resident systems can also cause the computer not to shut down properly, we may close some useless service programs according to the method described earlier. Speed up your computer's shutdown process in many way by doing the above.

Third, how to deal with the high CPU consumption?

Q: After a few recent online or running some programs, always feel that Windows XP is running slowly, press "Ctrl+alt+del" three key combination to open the "Windows Task Manager" interface, in the "performance" item to see the CPU occupancy rate of 100%, then how to solve such problems?

A: Long-term CPU usage is too high, it will lead to a sharp decline in system performance, or even into suspended animation state. System program This fault is generally infected with the virus, such as Love Backdoor, "Veekim" worms will occupy the system of a large number of resources, resulting in high CPU, running programs very slow phenomenon, finally only the system stagnation, freezing. The solution to this kind of problem is very simple, as long as download the corresponding virus kill tool can be removed by the virus.

If this behavior is not caused by the virus, then the high CPU usage is generally due to the Windows XP system running programs or the service is too large, the CPU resources caused by the "imbalance", we can modify the registry can improve the system responsiveness. Click "Start" → "Run", enter "Regedit" in the Run dialog box, click "OK" to open the Registry Editor. Expand the following subkey: Hkey_local_machinesystemcurrentcontrolsetserviceslanmanserver to create a new DWORD key value entry named "Maxworkitems" in the right window. Then double-click it, and in the Edit DWORD Value dialog box that pops up, determine the key value of the key based on the memory capacity of the computer. If your computer's memory is less than 512MB, type "256", or set to "1024" if the memory is greater than 512MB. When you are finished, quit Registry Editor and restart your computer to take effect. This will ensure that the system allocates the CPU reasonably, without the phenomenon of system suspended animation.

In addition, CPU usage is too high and often has a lot to do with the programs we run or the services we load. For example, when the software is installed, many software will add a shortcut to the Startup group of the system to launch programs or services that will run automatically as the system runs. This allows the software to be started quickly, but the loading of these programs greatly consumes system resources. Deepin system Download In fact, many programs or services that are automatically started are not useful for our average users and can be removed from the startup group.

First clear the Self-startup project, type "Msconfig" command in "start" → "Run", open "system Configuration Utility" and go to "service" tab.

In this tab we can see the "services" that are running with the system. By removing the hooks in front of a service item, you can disable the "service" item. If you are not familiar with the current service, you can tick the "Hide All Microsoft services" check box below, which automatically hides the system services provided by Microsoft. The rest of the service is added when the software is installed, and we can prohibit it as needed without any impact on the system. Switch to the "Startup" tab we can uninstall some unnecessary startup programs according to the method we described earlier. After setting, click OK.

Next, we're going to disable resources that are too heavy, and in the Windows Task Manager interface, in the processes dialog we can see all the currently running processes, showing the CPU occupancy and memory usage, and when we find that a process is consuming too much resources, select the process and click End Process button so that the system will force the program to terminate. Then write down the program to uninstall or reinstall it.