The computer has a black screen when it is turned on, and the network is unusable after restarting

1) If it is a problem with the broadband itself, first directly connect the broadband network cable to test, if it is a broadband problem, contact the broadband customer service to solve it.

2) If it's a problem with the router, if it can be used originally, it can't be used for the time being, my own practice is to disconnect the power of the router and plug it in, and I'll take a look. In there is a factory reset, from the new strict according to the manual settings can be used, I don't understand, it is not recommended to set it at will (this is under the premise of the correct physical connection, sometimes the router is slow or failed to find the IP address, not that the router is broken).

If it can't be solved all the time, it is recommended to call the customer service of the router, they have **** guidance, I encounter a problem that I can't solve by myself, it is very useful to consult the advice they gave, and they will give the correct advice for your settings or operations.

3) If you turn off the wireless switch, turn it on, if it is a wireless connection with software, it is normal for the software to be difficult to use and often have problems, there is no better way, use a router. In addition, it is caused by the network card driver is not or is not suitable, and whether there is a problem with the network cable interface or network cable.

4) If it is caused by a system problem, it is recommended to restore the system or reinstall it.

Use the system that comes with the system restore method:

System Restore that comes with the system: "Start" "Programs" "Accessories" "System Tools" "System Restore", click "Restore my computer to an earlier time", press Next, you will see that the date page has a dark date, that is the restore point, after you select, click Next to restore (win7810 restore the system, right-click on the computer to select attributes, on the right side to select system protection, system restore, follow the steps to do it, if there is restoration software, you can also use the software to restore the system).

5) If you have any questions, please ask me.

Solutions to common faults with black screen when computer boots.

Hello, happy to answer your questions. This kind of failure of electronic equipment, I understand your mood at this moment, who encounters this kind of failure of their electronic equipment is uncomfortable, at this time should calm down and find the most respectful solution. The following key content is the solution to the problem of this equipment failure:

The computer screen is black, and there is no network when it is turned on, what is going on? The main reason is that the system is unstable, the compatibility is poor, or virus interference, it is recommended to use the following methods to deal with it: 1. Check the network settings.

Open the control panel, open the network, open the local connection, set the IP address and DNS to automatically get the rock. 2. Reboot the device and press F8 together to enter the safe mode with network mode. **360 Security Guard, select the system first aid kit in the tool, select two modification options, and wait to be OK.

It is very common for electronic equipment to malfunction, only by calming down can the fault be finally solved, according to the above solutions to operate, encounter do not understand to communicate in time, which helps to quickly eliminate electronic faults. Finally, I wish you a happy life, all the best, all your wishes, and good luck!

Here's how to solve it:

1. After entering the system, press the "Ctrl+Alt+del" key combination to open the task manager;

2. In the open task manager, click the "File - New Task" option;

3. Enter the "explorer" command in the pop-up "New Task" window, and then click OK.

4. At this time, you can successfully enter the desktop, but in order to completely solve the black screen failure, continue the following operations;

5. Click the "Start" menu and select the "Run" option;

6. Enter the "regedit" character command in the open dialog box and press the enter key;

7. In the pop-up registry, in turn.

hkey local machine, software, microsoft, windows nt, currentversion, winlogon options;

8. Double-click the "shell" item in the list on the right, and modify the data value in the open string window to ";

9. Click OK to save and exit the registry.

A black screen is a common phenomenon, especially on older computers or builds. There are many reasons for the failure of a computer black screen, such as a damaged monitor, a damaged motherboard, a damaged graphics card, a poor contact of the graphics card, a damaged power supply, a damaged CPU, etc.

1) The monitor is powered off, or the monitor data cable is in poor contact. In addition, the computer has been used for a long time, and the power cord of the monitor is easy to oxidize and break;

2) There is no power supply to the motherboard;

3) Poor contact or damage to the graphics card;

4) Poor CPU contact;

5) Poor contact of memory modules;

6) The machine is infected with CIH virus, and the BIOS is refreshed destructively;

7) Check the plugging and unplugging, if necessary, you can use a rubber to remove the oxide film on the gold finger;

8) If the floppy drive has a floppy disk, many times it will cause the computer to start or restart, and the computer will have a black screen and cannot enter the system. To avoid such situations, it is also possible to cancel the floppy disk boot item in the BIOS.

For the treatment of the black screen of the computer, the method of eliminating and replacing is basically adopted, and the principle should be based on replacing and eliminating the most suspicious parts first. For ordinary computer users, professional knowledge is insufficient, you can follow the following steps to analyze the cause of the failure, so that you can do it yourself.

Start by checking that the contact is good. Check whether the contact between the graphics card and the monitor is good, and whether the contact between the graphics card and the motherboard IO slot is good, and if necessary, remove it and reinstall it again to ensure that it is installed in place and in good contact.

If there is no problem with contact, it is best to try a different monitor to make sure that the monitor is fine.

If there is no problem with the monitor, check whether the CPU fan is running, if it is running, use a multimeter to measure whether the voltage output is normal to 12V, 15V, if not, you can change the power supply to give it a try.

If the black screen still appears, take out the components installed in the computer, leaving only the CPU, graphics card, and memory sticks, and the cause of the fault can be limited to the CPU, motherboard, and memory. Generally, if there is a fault in the memory, there should be an alarm sound. If the memory fault is ruled out, only the CPU and the motherboard are left.

Change to a normal CPU (should be compatible with the tested computer), boot the computer and re-test, if the black screen still appears, you can only change to a motherboard, and the problem should also appear on the motherboard.

A black screen may indicate a serious problem with your computer, and you may wish to eliminate it as described above when the black screen occurs. In the process of treatment, the method of exclusion and substitution should be flexibly applied, and the phenomenon that occurs in a timely manner should be excluded.

The computer boots up and shows no signal and then a black screen.