MAC address loss can also cause Internet access

MAC address is also called Physical address, hardware address or link address, is the network card manufacturer burned into the network card of the EPROM. The MAC address is represented in the computer as a 48-bit binary number. such as: 00-0f-ea-d5-59-f5. The MAC address is the identity card number on our ID card and is globally unique. In the network, the host that sends the data and the host that receives the data is the MAC address as the unique identity mark, if the MAC address is lost, can cause the malfunction that cannot go online.

MAC address has two ways to save: a direct burning in the network card of the EPROM, this is relatively safe to save; the other is saved in the motherboard BIOS and may cause MAC address loss if the BIOS is refreshed. In Windows, the MAC address of the NIC is kept in the registry, and the MAC address in the registry is read from the network card when Windows is installed, and is read from the registry in actual use, so modifying the registry can change the MAC address.

Suddenly think that can not access the Internet before the accidental power off, and the screen also changed, may be the current impact caused by the loss of the MAC address in the BIOS, resulting in the failure to access the network. Because the MAC address is stored in the registry in Windows, the problem can be solved by simply modifying the MAC address in the registry.

1. Press win key +r, pop-up "Run" dialog box, enter "Regedit" and return, open Registry Editor.

2. In the "hkey_local_machinesysemcurrentcontrolsetcontrolclassd36e972-e325-11ce-bfc1-08002be10318