1, first see whether the computer or laptop wireless network or WiFi function is turned off, one is the wireless network and WiFi switch Settings with the system or software, the other is the hardware switch of the computer or laptop itself, the solution: re-open this kind of switch;
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2. Confirm whether the wireless network needs to enter the password and whether the password is correct. If you do not know the password of the wireless network or enter the password incorrectly, you cannot connect to the wireless network;
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3, check the device manager, there is no wireless network card device, if there is no or a yellow question mark above, it is the wireless network card driver problem, the network card driver may be lost or damaged, if the driver is lost, the \"local connection\" icon will disappear. Solution: Go to the official website or use the built-in driver disk to reinstall the driver, or install the driver wizard to update and reinstall the NIC driver;
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4, try to right-click \"Network connection\" in the system tray and choose \"Solve the problem\" for quick repair;
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5, press Win X, select \"Command prompt (administrator)\
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6, try to use the 360 security guard disconnected first aid kit, or Q Q computer manager network repair function to try to repair the network;
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7, unplug the modem (cat) and router power, wait for 10 minutes, and then plug in the power, wait until the modem and router normal operation, try to Internet;
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8. The network cable or network cable connector is in poor contact. Solution: Try twisting or plugging to see if you can connect to the Internet;
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9. There may be a problem with the DNS Settings. Solution: Please download and install the Magic Formula optimization master, which has: \"DNS assistant\" through \"DNS assistant\
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10, or the network set a fixed ip address. Specific IP and DNS are set in TCP\/IP (v4 or v6), but these IP and DNS (v4 or v6) are inconsistent with the router. The solution: If DHCP is enabled on the router, right-click \"Network Connections\" in the system tray and select \"Open Network and Sharing Center\
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11, you can also try to change the mode in the router's wireless Settings to 802.11n (the router needs to support this mode). Do not use mixed mode, method: right click \"This computer\
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12, if the above methods are invalid, it is likely that there is a problem with the router itself, try to restore the initial setting: when the wireless router is turned on, press the RESET key, after 5 seconds, restore the initial setting, and reset the wireless router; (Attached is \"Router Setup Method\")
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13, there may be a problem with the network provided by your network operator, please contact the network operator;
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14, the network card (including: wired network card and wireless network card) is damaged, please replace the network card; (If you do not understand, please find the network operator or professional to repair or replace)
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15, There is a problem with the router itself, or it is damaged, please try another router.