Win7 system boot prompts can not find the hard disk how to do

1. The hard drive data cable and power cable are loose, oxidized or broken.

Solution: Try to change the power connector, data cable or ide/sata interface.

2, may be some motherboards off the sata interface, can not find sata hard disk

Solution: to open the sata interface in bios.

3, overclocking the system causes the hard disk to work properly

Solution: Restore to default settings or reduce overclocking.

4, when the hard disk is used for a long time, the gold finger oxidation on the back circuit board causes poor contact

Solution: Remove the circuit board and clean the oxide on the gold finger.

5, may be too many ide devices on the computer, resulting in increased initialization time, and the corresponding self-test time did not increase, causing the system can not detect the hard disk or detection timeout

: Extend the time setting, find the "boot delay time" option in bios or "ld dedeay time", the motherboard bios without this option can also set the number of memory self-tests to 3 times to extend the self-test time.

6. When the computer is useless for a long time, and it is in a humid environment, the components on the hard disk are damp, and the hard disk cannot be detected.

Solution: first disconnect the power supply Then, use a hair dryer to evenly heat and dehumidify the hard disk.

7, may be power quality problems or load too many devices, resulting in low voltage output of +12v caused by the hard disk can not work properly

Solution: replace the quality or power power supply.

8, in the bios "standard cmos feaures", the hard disk is set to no

Solution: set to auto.

9. The ide jumper is set incorrectly. The ide device of the hard disk and other shared data lines will set the jumper to “master” or “slave”.

Solution: Change One of the ide jumpers can be;

10, the reason for the physical bad sectors of the hard disk

Solution: It is recommended to take a professional computer repair point for maintenance.