When installing win7 system, it is prompted to lack the required CD/DVD drive device. How to do

1. If you encounter such a problem, you only need to pull the u disk and re-plug it;

2, if it still doesn't work, it is very likely that you plug the u disk into the expansion USB slot, just plug the u disk into the main USB slot (such as the USB on the motherboard directly behind the chassis of the desktop) Slot), you can install it normally, you can try to replace the USB slot to solve the problem;

3, if you can't solve it, it is recommended to use the hard disk installation system

Added: In addition to the problem of installing the win7 system on the u disk, some old-fashioned desktops will have similar problems during installation, mainly because the Windows 7 installer does not recognize the IDE physical drive or hard disk, Windows 7 The driver of the south bridge chip is not integrated, and the IDE interface on the motherboard is provided by the south bridge. In this case, download the motherboard south bridge or north bridge chip driver, and then copy/unzip to one. U disk, insert U disk drive is added when installed on it.