What if you can't read the cd?
The optical drive is a machine used by computers to read and write the contents of disks and a more common component in desktops and laptops. As multimedia applications become more widespread, the optical drive has become a standard configuration in many parts of computers。
The optical drive is used (including cloud computing) in the installation of many software and systems. The laser head is a luminous heart and the most sophisticated part. It is primarily responsible for data reading and therefore has to be particularly careful when cleaning up the optical interior。
Now, let's see what happens with the laptop。
I. Dust from skin to make the reader less capable
If you do this, remove the pv, open it and wipe the head of the lasers with a pharmacist cotton ball with waterless alcohol or distilled water (parallel wipe, do not turn around). Don't use the detergent -- it forms a membrane. It's dry for 20 minutes. It can make light work for you for a while。
Ordinary users are not capable of doing what they can, and dismantling the clean-up may be difficult to recover, and it is recommended to buy a clean-up cd-rom, which is generally available at the point of sale。
Ii. Long-term non-use, optical transmissions, lack of lubrication in motor components, resulting in low or non-movement speed
It's probably a laser slider without oil or stuck. Clean metal axle with some oil. When you put it in the disc, you can tell if there's a spinning sound, or if there's an abnormal sound。
Iii. Aging laser heads
You can turn up the output power of the laser head, there's a screw in the back of the laser header, and you can rotate it about 15 degrees slowly, if you can't, 15 degrees more, and try again until you can read the film。
Iv. Viruses
For example, the pv has been maliciously shielded from registration. Whether the “nodrivers” binary value in “my electron hkey current user/software/ms/windows/currentvrsion/polices/xpler” is a optical value. There is normally no such item, and the value can also be changed to "00:00 0000" (01 0000 0000 a,0400 0000 c, ff ff ff to hide all drives)。
Note: there are viruses that specifically change the registration form to lose the pv. Some viruses do not result in the loss of pvs, but do prohibit pvs, and no cds can be read, but they can be launched on cds。
V. Incorrect driver damage or installation
Usually, a pv driver is attached to the windows and no additional addition is required. If the pv driver is not installed by its own driver, the loss of the pv may also occur. This generally occurs by adding so-called “optimization”, “acceleration” or other procedures. This is when you can enter the security mode to delete the " cdrom " option from the " device manager " and restart the computer so that the system can find itself new hardware to re-install the optical drive。
Vi. A pirated disc or disc of too poor quality to read on the light
The same is true of my new brand computer, which is not a matter of optical quality. The dvd is designed for dvd video discs and has a good error correction and compatibility capability for those that are close to the dvd; the optical drive is dominated by access to cd-rom data, which is certainly less powerful for dvds。
Vii. Inadequate optical disk performance
This generally occurs on newly purchased assembled computers or newly purchased optical drives. The disc is read with a huge “humming” sound, which is likely to cause power problems after the loss of optical power. It's necessary to open the check。
The pv is now worthless and rarely used. Because the usual software can be downloaded from the internet. As a result, repair costs are too high to be of any value。
