How to solve the problem of Win7 system booting? When the

Win7 system computer is turned on, it will be stuck in the picture with the motherboard LOGO information and it will not move. The keyboard light can be controlled and not like a crash, but there is no way to pass. How to diagnose and solve such a fault?
Solution:
1. Usually, when the computer is turned on, the device is self-tested first. If the card screen is on the motherboard LOGO picture, most of the cases are that the hard disk detection has not passed. You can try to replace the data cable with the hard disk. If there is no cable, you can try to change the data cable at both ends, and then change the interface on the motherboard.
2. Motherboard BIOS error, some motherboards have anti-intrusion mechanism. If you have recently changed the accessory, it may be caused by a motherboard BIOS error. The solution is to press the DEL button to enter the motherboard BIOS, initialize the BIOS settings, and then press F10 to save and restart the computer.
3. Check whether the machine has external device connection, U disk, mobile hard disk and other external devices may be plugged into the computer's USB port and forgot to unplug, causing the motherboard self-test card master to pass. The solution is to pull out the extra external device and restart the computer.
4. Check if the keyboard and mouse are reversed. This refers to the keyboard and mouse of the PS/2 interface. Many people care about it. The interface between the keyboard and the mouse is reversed, causing a self-test error of the boot computer to the card screen. The solution is to shut down and reconnect the keyboard and mouse. Usually the purple interface is the keyboard and the green interface is the mouse.
5. Back to the second point, or hardware failure, if the hard disk is still invalid after changing the data line, you can also try to unplug the data cable of the hard disk and then boot the test. See if it will still be stuck in the LOGO screen. If not, it is estimated that the hard disk is faulty. The solution is to replace the hard drive.