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3) Hard Disk Drive / SSD Failure
The worst has happened, and your files became corrupted. At times, this is easily resolved by repairing your game files, although in a lot of cases, constant "The file is corrupted" errors appear even after repairs.
This can be an indication towards faulty hardware - highly likely with your RAM modules or your HDD/SSD.
This happens when game assets are loaded from your storage device into corrupted RAM sectors, and as the client is trying to load them, the error occurs. While not as easily identifiable in other applications, the amount of game assets Black Desert Online has is huge, and the chances data is loaded in a bad sector are considerably high.
To determine the root cause, please check the following:
RAM is another possible cause of this issue due to the very nature of RAM and how it is used by your machine. RAM “random access memory” is normally associated with volatile types of memory (such as DRAM memory modules), where stored information is lost if power is removed. Although many efforts have been made to develop non-volatile RAM chips. RAM has no moving parts as it is a volatile memory system and as such can be open to failure and corruption.
To test this, we recommend Memtest86, a memory checking tool that will scan your RAM modules for underlying issues - (it is worth noting that Windows Memory Diagnostic will not provide solid results). If any errors are found after a complete scan, a RAM replacement is highly suggested.
Hard Disk Drive / SSD Failure
If you’re beginning to find files that fail to open and are corrupted even though they saved without errors or if files suddenly disappear, you should get worried. While again this could be due to a multitude of issues, it is also a typical sign for a gradual hard drive failure. To test, feel free to use HDDscan.
The game won't be able to use the files if the Antivirus blocking/locking that. AVG Anti-virus seems to be a big part of the issue, it is suggested to disable AVG anti-virus (or other antivirus SW as well) or at least add the game folder to the exclusion list while playing.
Your network can cause file corruption that can be fixed by checking your network driver for your network card. If you download a file and it is corrupted, rename the file to file.Bad and get another copy then do a file compare of the two files. If they are the same, then update your network device driver to a current version and get another copy and see if it is corrupt.
If it is not, then the old device driver assembled the packets incorrectly and caused the corruption. This is the easiest corruption to find and fix, others can be caused by any component that the file is translated by such as: cable modem, router, local machine tcp/ip stack, network driver, clear down to the bugs in the hard drive you store the data on.
If you have tried these steps, it would also be worth changing your DNS in order to make sure that a file isn't being corrupted while travelling across networks.
It would be worth your while to test all aspects of your network and hard drive to ensure everything is in good condition and working properly. (This assumes you checked for likely corruption caused by viruses.)