degaussing

Just equipped with a host, installed USB small speakers, USB plug into the host will have "squeak squeak" of the current sound, very dry people. Mute also have! Once pulled out, it's gone. The "squeak" sound changes as the speaker volume changes. With another power supply to the USB speaker power, the audio cable Connection notebook is not the case! USB speaker, its input end has three lines, one of the left and right channels, a public line, this public line and the negative side of the

not access the data. Even if the computer is lost, try to use data recovery software to recover the data, there is no password to access the recovered files, so it is relatively safe and convenient method. Ultimate Solution: Completely destroy the hard drive The final solution, though somewhat extreme but most secure, is to completely destroy the hard drive, you can try to destroy or choose degaussing Service to remove the magnetic di

Observe whether there is a strong electric field or strong magnetic field interference around the computer monitor, magnetic field interference is very easy to cause the computer screen jitter or flicker, the elimination method is to place the computer in another open space to observe, you can go to another place to take a good computer to test the exclusion, as far as possible not to the display near large electrical products. Can also restart the computer monitor to see, the general current di

old. Early purchase of the computer is prone to this problem, at this time do not use the purchase of the computer with the CD-ROM driver, you can check and install the latest version of the driver. Third, whether there is interference around the computer Observe whether there is a strong electric field or strong magnetic field interference around the computer monitor, magnetic field interference is very easy to cause the computer screen jitter or flicker, the elimination method i

=/dev/sda?of=/dev/sdaWhen the hard disk is not used for a long time (for example, 1, 2 years), a degaussing point is generated on the disk. When the heads read these areas, they encounter difficulties and can cause I/O errors. When this condition affects the first sector of the hard disk, it may cause the hard disk to retire. The command above may bring the data back to the dead, and the process is safe and efficient. Example:1. Back up the MBR:

/nullRepairing the hard driveDD IF=/DEV/SDA OF=/DEV/SDAWhen the hard disk is not used for a long time (for example, 1, 2 years), a degaussing point is generated on the disk. When the heads read these areas, they encounter difficulties and can cause I/O errors. When this condition affects the first sector of the hard disk, it may cause the hard disk to retire. The command above may bring the data back to the dead, and the process is safe and efficient.