Quite often in service centers people ask: “My CDRW-DVDRW combo drive has started to read poorly or does not read one of the media types at all.” Similar questions are found quite often in various forums on the Internet. That is, after six months to a year of operation (as a rule, immediately after the end of the warranty period), the drive stops reading CDs or DVDs. Usually the problem appears gradually. First, rewritable discs of one of the formats begin to be poorly read, then it is the turn of disposable CD-R or DVD-R blanks to be poorly read, and finally it is the turn of factory-made stamped discs. This problem is usually not related to contamination of the optical drive system. A dirty lens and a translucent mirror located underneath it equally degrade the reading quality of both types of media. The fact is that two laser modules are installed in the reading head of universal combo drives. One of them is used for reading and writing DVD standard discs, the other for CD discs.
Over time, the brightness of one of the lasers may decrease. This happens either due to changes in the parameters of the laser emitting crystal itself, or due to changes in the parameters of the electrical circuits through which it is connected. There is a simple way, accessible to almost anyone who can hold a screwdriver in their hands, to restore such a drive to functionality and prolong its life. Let's look at the solution to this problem using the example of widely used NEC drives. From the tools we need a Phillips screwdriver to disassemble the drive, a small flat-head screwdriver and a thin black marker or felt-tip pen. Carefully remove the covers from the drive, unhook the cable going to the reading head, and remove the electronics board to gain access to the optical head from the bottom side of the drive. Approximately as shown in the photo:
photo No. 1
This is a bottom view of the read head of the NEC1100A drive. We are primarily interested in small trimming resistors installed directly on the head. These resistors regulate the current through the laser diode and, by changing their value, you can change the brightness of the laser radiation within certain limits. In the figure they are circled and designated by numbers 1 and 2.
The location of these regulators is different models drives can vary greatly. For example, this photo shows the optical head of a newer NEC4570 drive:
photo No. 2
The required resistors are also circled and marked with numbers. In principle, nothing more complicated. You need to take a thin screwdriver and slightly increase the brightness of the desired laser. You can find the right regulator experimentally. Let's assume that our drive reads CDs well and reads DVDs very poorly. We take a marker and make marks on the resistors to remember the position of the engine, which was made at the factory when setting up the head. Then, we twist one of the resistors, for example number 1, to its extreme position counterclockwise. We assemble the drive and check the reading of CD and DVD discs. For this it is convenient to use Nero program CD-DVD Speed. If the reading of CDs, which were previously readable well, has sharply deteriorated, it means that we have turned the regulator of the laser responsible for reading this format. We return the resistor slider to its previous position. If the quality of reading CDs has not changed, then we guessed right and turned the brightness control of the DVD laser. That's what we need. After we have found the desired regulator, we turn it approximately 5 - 10 degrees clockwise relative to the position that was set at the factory and which we marked with a marker. Reassembling the drive and checking readability DVD. If this does not help, we tighten the resistor further, finally achieving best quality reading. The method is simple, but quite lengthy, requiring, in addition to accuracy, a fair amount of patience. But it often allows you to bring back to life a drive that is already intended for disposal and save an extra thousand.
Setting up a DVD player
Introduction
This section of the manual describes how to use the Set-up menu, which is intended for
to configure the player for your system and your preferences.
Image output
For initial setup player using the Set-up menu, we recommend
We recommend connecting your display device to composite video.
player output. This is because the video output that provides
the most high quality pictures, has several display modes
zheniya, and in the original configuration may be incompatible with
your TV or projector.
Turn on your display device and make sure the correct
video input. An image should appear on the screen, showing -
noe on the right. It is generated by a DVD player without a disc.
NOTE: To protect your TV screen from burnout
when displaying a still picture for a long time, after several
No minutes after such a display, the screen protection program is activated.
At the same time, a small logo begins to move across the screen
ARCAM. To restore the image, press the STOP button
on the front panel of the player or on the control panel.
Using the Settings Menu
The DV139 player has two settings menus:
The Set-up menu allows you to configure all the DVD player settings. Description of parameters and
their valid values are given on the following pages.
The Display set-up menu is a set of test video patterns with tools
instructions to help you configure your display device according to your settings
DVD player.
Set-up menu
The Set-up menu has six pages. The tabs on the left side of the screen display the pages indicated by
properties. To move from one page to another, highlight the desired tab with the cursor and click
To change an item, first use the buttons UP/DOWN[Up/Down] highlight it and press OK, What-
would open a list of options. The current option is displayed. Buttons UP/DOWN can you-
take a new one; button press OK confirms the selection and closes the list of options. (If the item that
you want to change, controlled by the knob, press OK to activate the regulator and press
OK again when the desired value is set.
Items that are not used in the current configuration (for example, Pro Logic II settings when turned off)
when processed by Pro Logic II), “fade” and become unavailable for selection.
To enter the Set-up menu
, press the button SETUP on the remote control. Click SETUP again to close
menu.
Display set-up menu
To optimize video performance, you must configure the display according to the type of video you are using.
source of video signals, in in this case with DVD player. A series of test patterns generated by DVD-
player, allows you to optimize the color balance, contrast, brightness and position of the picture. Full
instructions for each test pattern are displayed on the screen before the pattern itself is output.
To enter the Display set-up menu
, place the cursor on the Display button, and press OK.
When finished, click SETUP again.
Remove the side walls of the computer.
Naturally, the computer must be turned off.
Find a free 5.25 bay (or empty it) and insert a CD (DVD) drive there (outside -> inside).
Then use the supplied screws to secure it.
Before installation, check the position of the Master/Slave jumper; two identical modes are not allowed.
Then connect the cable, power and, if necessary, an audio cable (Audiocable).
Then close the computer and start it.
The system itself will find new equipment and install the driver.
If this does not happen, then there is a conflict between PnP devices (CD (DVD) drive, sound card, modem, etc.) at the level of interrupt requests and I/O ranges, and this can also happen implicitly (the device is simply not detected by the system).
In this case, you need to install the drive manually using the “Add Hardware Wizard”, and after installing the equipment, you need to configure the interrupt request and I/O range manually by clearing the automatic configuration flag.
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The first set of graphics drivers, Radeon Software Adrenalin 2020 Edition 20.1.1, released in January 2020, contains optimizations for the game Monster Hunter World: Iceborne and fixes almost three dozen errors identified in previous releases.
Hello, friends. I decided to write an article on the topic: the computer does not see the Windows 7 DVD drive. The tips written below are also relevant for other versions of Windows.
Nowadays, probably few people use CD or DVD drives, but even if a breakdown occurs, do not rush to order a new drive. There are many reasons why it stops working. If the failure is in the drive, then you can solve the problem by knowing some secrets. I’ll say right away that the drive is not always the main problem. Next, you will learn about the main breakdowns and how to fix them. There is also a video at the end of the article with another solution to the problem.
Features of the problem
Try to identify the nature of the breakdown. Let's start by checking the disks. We take the disks and try to start them, if some of them start, then we begin to look for faults in the technical part. There is also a moment when a failure occurs during the operation of the operating system, then the disks are not readable at all. The same fate will affect disc recording.
How to solve the problem programmatically? Think about what programs were recently installed on your PC. Perhaps they were playing games. Sometimes during installation they randomly install “their own” virtual disks, in the end they conflict and problems appear with the DVD drive. Another popular cause of “breakdown” is the Alcohol or Daemon Tools programs - as you understand, they are needed to mount these same virtual disks. All of this can affect the operation of the drive.
How can everything be checked?
The answer is simple: remove the programs listed above and try to start the drive. If everything starts up and works, then the answer is obvious. If you haven’t noticed any changes, you’ll have to dig further. Another popular problem is driver glitches. In this case, use Device Manager. Go to “Control Panel -> System” or for those who are used to working with the keyboard, press “Win + Pause”, then select “Device Manager” on the left side.
If we remove the above software and open the device manager, we can still see virtual drives installed by the programs we mentioned above. You need to look at them in the “DVD and CD-ROM drives” branch. Now let's use right click mouse, menu and delete them. Then restart your computer. See if any changes have occurred.
What other actions can be taken? We list below:
— click the “View” menu, select “Show hidden devices”;
— find the “SPTD” driver in the device tree (it is located in the “Non-plug and play device drivers” section);
Is there a positive result? If not, move on. Find among the 2 or 4 controller channels in the IDEATA/ATAPI controllers section the one to which the DVD drive is connected. As a rule, each such channel has a different name. Open each channel one by one and look at “Device Type”.
What we are looking for is "ATAPI CD-ROM drive". What to do next? You need to look at the “Enable DMA” checkbox. If it’s standing, then remove it, if not, then put it up. Then reboot, look at the result. When everything started working normally with the option disabled, check the box and reboot again. Leave the working option. For best, the “Enable DMA” feature should be enabled. Sometimes this condition is considered the only possible one when Windows 7 is installed.
How else can you configure the drive?
Go to device manager and open the DVD drive there. Next, as in the picture, select your drive, click “Properties” and go to the “DVD Region” tab, see what region is indicated here. If the region is “Not selected”, then we leave it as it is and do not change anything. If the region shown is not yours, set yours. Please note that you can only change the region 5 times. Try additionally changing “Not Selected” to any other region. Reflashing will help you get everything back.
What to do next if there are no problems with the hardware?
- The first thing we look at is the train. Maybe you did something recently on your PC that could have damaged it. Replace it - maybe you have a spare one, or you can borrow a replacement from one of your friends to check, or buy a new one. Next, look at the power plug.
- Open the tray, blow out (as far as possible) the insides of the drive. Why is this needed? During operation, the DVD drive becomes covered with dust, this directly affects the operation of the laser. If there is a layer of dust on it, then the discs will not be readable or will be readable, but selectively.
- If you have previously encountered the repair of any equipment, then you can use this advice. Carefully disassemble the drive, soak an ear stick in alcohol and clean the laser eye with it.
- For those who are not good at repairs. Not everyone can properly disassemble and reassemble a DVD drive. Tip: Use a cleaning disc that has brushes. If the drive recognizes the disk, it will spin it and the brushes will remove dust from the laser.
- The second option is flashing the drive firmware. Try to find the firmware on the manufacturer's portal, download and follow the instructions for proper installation.
Also watch the video, it shows another solution to the problem
Installing and replacing CD-ROM drives is fairly easy. In most cases they are configured as master devices and connected to secondary channels IDE controllers, EIDE or Ultra-DMA, but they can also coexist as slave devices on the same channel with hard drives or other storage devices. The main thing to remember is that the BIOS cannot directly support the operation of a CD-ROM drive (even if the BIOS recognizes it at system boot stage, and compliance with the ElTorito standard allows you to boot from a CD). You need a real mode driver to work with a CD-ROM drive in a DOS environment or a protected mode driver when working in Windows environment. This section describes the basic installation steps for a typical embedded IDE CD-ROM drive.
Installation of jumpers.
An IDE-type CD-ROM drive can be connected as a master or slave device to any of the drive controller channels on hard drives. Assigning a particular status to a disk drive is done using one or two jumpers located on the back of the device (next to the 40-pin signal cable connector). Before installing a CD-ROM drive into your computer, you need to determine its configuration.
If it is connected as the first (or only) drive to the secondary channel of the drive controller, then it must be assigned the status of a master device by rearranging the jumpers.
When connecting a CD-ROM drive to a primary or secondary controller channel that is already used to service a drive, it must be configured as a slave device.
The sequence of actions is as follows.
Turn off your computer and unplug its power cord from the outlet. Remove the cover system unit so that you can reach the drive bays.
If you are installing an IDE drive, connect one end of the 40-wire signal cable to the drive controller connector located either on the system board or on a separate adapter card. If the drive is equipped with a SCSI interface, the only differences are that the signal cable is 50 or 68-core, and the host adapter in most cases is a separate board. Do not confuse the orientation of the cable connector: the colored core of the signal cable corresponds to pin 1 of the drive controller connector.
Find a suitable bay to mount the CD-ROM drive. Remove the plastic plug on the front panel of the system unit and slide the drive into the open bay. Locate the four threaded holes for mounting the device. In some cases, you will have to use additional guides in order to “expand” the drive and bring its dimensions into line with the dimensions of the bay1. Drives with pull-out trays are usually mounted horizontally, and devices designed to install CDs in containers (caddy) can be installed “on edge”.
Connect the signal cable and the four-pin power connector to the newly installed drive. Securely secure the device into the bay using screws. Do not over-tighten them to avoid damaging the drive. If there is no free four-pin connector in the system, then the power supply to the disk
In specialized cases designed to build powerful servers, a drive bay design is sometimes used that involves the use of special guides for devices.
Connect the drive using an audio signal cable (with small 4-pin connectors) to the corresponding input jack (CD-audio) sound card. This will allow you to play CD music directly through your sound card. Make sure the signal cable included with the drive is compatible with the connector on your sound card. If this is not the case, then you will need a special cable (such connectors are included with most sound cards).
Setting BIOS Settings
Despite the fact that CD-ROM drives require driver programs to operate, most modern motherboards are able to identify AT API IDE drives at the BIOS level. If you are dealing with such a motherboard, then you need to configure BIOS settings for the computer to recognize the CD drive.
Turn on your computer. As it starts, watch the monitor screen and wait until a message appears telling you how to enter the BIOS setup program. Most often it looks like PressFlForSetup (Press the F1 key to enter the setup program). Click on the appropriate key and enter the program.
In BasicSetup mode, select the section in which you can specify parameters hard drives and select the connection point and status of the CD drive in accordance with the positions of the jumpers on it: slave on the primary (PrimarySlave) or on the secondary (SecondarySlave) channel, or master on the secondary channel (SecondaryMaster).
If this option is provided, select the Automatic Drive Detection mode - this will allow the BIOS to identify the newly connected drive. If the BIOS does not provide automatic recognition mode, then select None or NotInstalled for the CD drive - in this case, the CD drives can be accessed only after loading the appropriate driver.
Save your BIOS settings and exit Setup. The computer will automatically restart.
Assembling the system unit.
After installing the CD-ROM drive, double-check that the signal cable and power connector are securely connected. Carefully lay the wires in the system unit case. Check to see if you left any tools, mounting screws, or extra cables inside. Now put the system unit casing back in place.
Software installation
To complete the CD-ROM drive installation procedure, you must install the driver programs that are located on the floppy disk or CD that came with the device. OS Windows, as a rule, automatically detects the presence of a new CD-ROM drive and offers to install protected mode drivers (or select suitable driver). If you are running DOS, you may have to run an installer that will copy the HDD real mode driver files and will insert into system files AUTOEXEC.BAT and CONFIG.SYS changes required to ensure that these drivers are loaded at system startup. If there is no such installer program, then you will have to make changes to the AUTOEXEC.BAT and CONFIG.SYS files manually (this was discussed in the “ Software CD drives"). After installing the drivers and rebooting the computer, the CD-ROM drive will be recognized, marked with a letter, and ready for use.