Alien laptop hard drive showing C7 Ultra DMA CRC error count is broken

ultradma

CRC error count" (C7) does not have a very specific explanation, generally speaking, it means that the hard disk interface is damaged, generally the hard disk is plugged and unplugged normally many times, there will be this yellow alarm, but don't worry, please carefully check the SATA interface of the motherboard and the SATA interface of the hard disk, whether there are obvious signs of wear or burn, if there are no signs of this, the hard disk can be used safely, change a few more versions of HD-TUNE software for testing, you will find that the existing HD-TUNE has a yellow alarm, Yes, no.

**Generally C7, but different manufacturers have different definitions of this**, with general software, such as HDTune to detect C7 error, it is not necessarily a UDC error.

Moreover, you have this number 1, which is not a problem at all.

If you think it's slow, it's something else, and it definitely has nothing to do with the UDC bug.

First of all, if it's an SSD, it's usually a false positive.

ultradma

CRC error count" (C7) does not have a very specific explanation, generally speaking, it means that the hard disk interface is damaged, generally the hard disk is plugged and unplugged normally many times, there will be this yellow alarm, but don't worry, please carefully check the SATA interface of the motherboard and the SATA interface of the hard disk, whether there are obvious signs of wear or burn, if there are no signs of this, the hard disk can be used safely, change a few more versions of HD-TUNE software for testing, you will find that the existing HD-TUNE has a yellow alarm, Yes, no.

What are the possibilities for a hard drive to have a CRC error count? The first is that your data cable is faulty, you can find another data cable to test, you can know whether the data cable is faulty. The second is that there is a problem with the software that is randomly tested, which is also very simple, and you can know by changing the hard disk to another machine or testing it with another test software.

1.Exceptions are mostly caused by problems with the hard drive data cable. When the hard drive's data cable (IDE or SATA) itself is defective, or the plug of the hard drive's data cable is not plugged in properly, data transfer errors may occur, resulting in CRC verification errors.

2.Sometimes, abnormal shutdown, abnormal power supply of hard disk, etc., will also cause the value of the C7 project to be abnormal.

Solution:1Please first check whether the data cable of the hard disk has been plugged in, if the value of the C7 item is still increasing after re-insertion, please consider replacing the data cable.

2.After ruling out the cause of the data cable and power supply, consider whether there is a problem with the hard drive circuit (which is unlikely).

3.As long as we see that the value of the C7 item does not continue to increase, it is considered that the fault has been resolved.

The analysis is as follows: <>

2. Check the software's prompt for this error warning, what is the cause of it, the prompt here is a communication error, which may be caused by a damaged cable.

3. To put it simply, if the interface is a little loose or poorly contacted, data will appear, and the data cable of the hard disk can be re-inserted to make it in good contact.

<>4. You can also use alcohol or eraser to wipe the hard disk interface and motherboard interface to prevent poor contact caused by oxidation.

5. Use the computer normally, continue to use the software to observe and pay attention to the hard disk, and whether the data of the (C7) Ultra DMA CRC error count is increasing.

6. If the (C7) Ultra DMA CRC error count value does not rise, there is no problem, it can be used normally, the value rises, you can try to change the data cable.

Ultradmacrc Error Count" (C7) does not have a very specific explanation, generally speaking, it means that the hard disk interface is damaged, generally the hard disk is normally plugged and unplugged many times, there will be this yellow alarm, but don't worry, please carefully check the SATA interface of the motherboard and the SATA interface of the hard disk, whether there are obvious signs of wear or burn, if there are no signs of this, the hard disk can be used safely, change a few more versions of HD-TUNE software for testing, You will find that some HD-tune has a yellow alarm, and some do not.

**Generally C7, but different manufacturers have different definitions of this**, with general software, such as HDTune to detect C7 error, it is not necessarily a UDC error.

Moreover, you have this number 1, which is not a problem at all.

If you think it's slow, it's something else, and it definitely has nothing to do with the UDC bug.

The C7 Ultra DMA CRC error count on the notebook is caused by a setting error, and the solution is as follows:

1. Detect multiple professional software to see if the error is consistent and determine the problem of the hard disk.

2. Check the description of the error and the repair method provided by the software, and see if the software can be used to repair the operation.

3. Check whether the data cable of the hard disk has been plugged in, and whether there is any loose or poor contact.

4. Observe whether the interface is oxidized, you can use alcohol or eraser to wipe it, and then reconnect it.

5. After excluding the reason for the data cable and power supply, consider whether there is a problem with the hard disk circuit, the probability of this occurrence is very small, if it is really the circuit, consider changing the hard disk.

6. Observe whether the value of (C7) Ultra DMA CRC item is increasing, whether the computer can be used normally, if not, please continue to use it and do a good job of backing up important data.

The CRC verification error of UDMA is usually caused by interface or data line problems. Fix:

Check your hard drive interfaces, data cables, and motherboard SATA ports.

Change the port first, and change the data cable if the error continues to increase.

If the above method does not work, hang this hard disk to other platforms and try again, and repair it if there is still a problem.