系统找不到光驱收集的解决方法（The system could not find a solution for optical drive collection）

系统找不到光驱收集的解决方法（The system could not find a solution for optical drive collection） 系统找不到光驱收集的解决方法(The system could not find a solution for optical drive collection) Text: Two days ago, boot suddenly found the system CD-ROM can not find. Depressed, he did not do what, that is the data line problem can be changed, or the old way, remember that in order to speed up the start, disable the floppy drive, re open in CMOS, floppy drive is there, but not the same CD-ROM. See the motherboard detected CD CD-ROM in CMOS, I think it is the problem of the system, the online search information, that is likely to be the device manager IDE ATA/ATAPI controller driver problem, also think of yesterday have drive device type in a program into a free the original, automatic detection. Transfer mode for DMA (if available) after the change, restart the computer, and finally find the drive, the problem resolved. Attach relevant information: CD-ROM lost most of the time we are in the installation of new software or a new driver appears, we may also inadvertently modify the CMOS or CONFIG.SYS configuration settings, and because the machine is infected with a virus. Hardware reasons 1. the data line is reversed or the data line is damaged Sometimes just a little wrong, but full circle, this shows that in order to solve the problem must be cautious, and a keen observation. When the CD-ROM is lost, you should first check whether the data line of the drive is connected (red or red), whether it is loose or not. If you are sure there is no problem in the other place and the data line of the drive often moves, you should try to replace a data cable. 2. jumper settings and hard disk collision When the driver's jumper and the same data line connected to the hard disk phase, there will be no drive (also may not have a hard disk), then as long as the driver's jumper jump and hard disk is not the same. In order to improve data rates, it is better to separate the hard disk from the optical drive on the two IDE interfaces. 3. power line fault, lack of +5V voltage or +5V voltage, power supply is abnormal It doesn't happen much. Because we are in CD-ROM disassembly or hard drive force is too large, the D type power supply plug loose or because of the bad working environment of the computer plug oxidation rust, power supply CD-ROM is not very normal (if it is hard to read the disk, and the disk surface will be abnormal sound, there are a lot of bad sectors, there will also be found CD-ROM). On one occasion, to upgrade the client's IBM computer, add an optical drive. Who knows a new 40 times CD-ROM installed, after all, the computer can not find. CD-ROM out of the box is normal, but also can not think of the power source, just want to software aspects. Finally, there is no, and picked up the multimeter test voltage, there is no +5V voltage. First, check the power line, found that due to the demolition of many times, +5V red line has been broken, but still can not see outside. A little bit of trouble cost the boss. 4.IDE interface corrupt If the letter CD-ROM suddenly lost, unable to use CD-ROM, then we can put the CD-ROM and interface of the hard disk swap. If you start again after that to find CD-ROM, but can not find the hard disk, that is the original ground CD-ROM IDE interface damage; if the computer can start normally after the exchange, but still did not CD-ROM, that is why CD-ROM itself, then only the replacement of CD-ROM. Anyway, there is not much money for an optical drive now. If there is no CD-ROM in WINDOWS, we can DOS (restart the computer after DOS, according to F8 and non WIN98 DOS) with CD-ROM universal WIN98 driver to try loading CD-ROM, if it can be loaded successfully, that is why the software aspect, mainly from aspects of software should find the reason. Otherwise, the hardware should be considered. Software reasons 1.IDE driver installation error or conflict with a driver If we install WIN98 or 95 IDE will not have the correct driver installation, or after installation when you open the device manager to see "" when the hard disk controller and found that there is a yellow exclamation mark, This CD-ROM letter may not be able to find the. Under normal circumstances, when we enter the safe mode, there is no CD-ROM letter. If we want to use the drive in safe mode, we can load the drive in the Autoexec.BAT and Config.sys files so that we can use the drive in safe mode after restarting the computer. Too few settings for LASTDRIVE in the 2.CONFIG file If we set "LASTDRIVE =" in the CONFIG.SYS file?" The amount is less than the actual number of drives, and even when we install the drive, we don't see the shadow of the drive in my computer. At this point, simply remove the item or set it to LASTDRIVE=Z. Improper setting of 3.DMA If CD-ROM only supports the PIO4 standard, does not support the DMA/33 standard, and we are forced to make use of the standard CD-ROM (in the "my computer" attribute in the "device manager" CD-ROM CDROM properties "Settings" option DMA tick "). At this time, sometimes the drive will be lost, and sometimes it will cause the computer can not start properly. At this point we can go into safe mode and remove the DMA settings in the CDROM property. What kind of data transfer mode does our hard disk or CD-ROM drive support? We can see it in the basic configuration table of the second screen in the computer startup process. 4. drive in the registry is malicious shield off If the binary people in the "my computer" HKEYCURRENTUSERSoftwareMicrosoftWindowsCurrentVrsionPolicesxplorer in the value of NoDrivers is CD-ROM value. Normally without this item, the value can be changed to 00000000 (01000000 is A, 04000000 is C, and FFFFFFFF is to hide all drives). Note: now some virus specifically change the registry, the CD-ROM letter lost, and we had to reformat the hard drive and install the system. Some viruses do not make CD-ROM letter lost, but will ban CD-ROM Dupan, what kind of disc can not read, but it can be used in CD-ROM boot. 5. drive is installed correctly If the CD-ROM driver is not installed by its own driver, there will be CD-ROM loss. This happens in order to improve the performance of optical drives, and artificially add drivers, acceleration programs, or other programs that are found in the network or disk. Usually in WIN98 and 95 comes with CD-ROM driver, do not need to add. Then you can enter safe mode, delete the CDROM option in the device manager, and then restart the computer, allowing the system to find new hardware and reinstall the drive. Improper setting of 6.CMOS If the transmission mode is set in the CMOS setting error, does not support PIOMODE3 or PIOMODE4 or DMA/33 or WIN98 in the old drive will not appear in 95 CD-ROM icon. At this point, you only need to enter CMOS in INTEGRATEDPERIPHERAIS, IDEPRIMARYMASTERPIO (or UDMA) and IDEPRIMARYSLAVEPIO (or UDMA) instead of AUTO. By the way, if we are in the CMOS will be corresponding to the CD-ROM drive IDE interface DISABLE, the driver can not find in any case. 7. using a virtual drive improperly The virtual CD driver can avoid reading the CD frequently and improving the speed of reading, which makes it possible for us to play the compact disk conveniently. But sometimes we don't want to use the virtual CD-ROM program, want to uninstall it or want to install the new procedure, but there was an accident, the virtual CD-ROM letter, but the letter did not CD-ROM.