Help! I Think My Friend’s Computer Got a Virus

Sounds like it's time for a full system reinstall. If you or your friend have a spare USB drive, that should help. Just make sure to save any important data to the drive first if possible. However, if ransomware is involved, you might lose that data anyway.

Yeah, looks like a ransomware infection to me. If backups aren’t available, recovery is pretty much impossible. Check for ransom notes left by the virus—those are usually in text files on the desktop. Trying to find out which virus it is might help you find any available decrypters online. Just be cautious!

It sounds like your friend might be dealing with a cryptovirus. These types of malware can encrypt files like documents and AutoCAD files, making them unusable. If she doesn’t have backups, unfortunately, those files are likely lost. I recommend looking into cryptovirus info to see if that matches what you're seeing.

From what you've described, this seems like a classic case of ransomware. The renamed files and AutoCAD issues are big red flags. First, disconnect the computer from the internet to prevent any further compromises. Avoid using random tools now—this can overwrite potential recovery options. Check for any ransom notes in folders and see if there's a new file extension like .locked or .encrypted. If that doesn’t help, there are services like ID Ransomware that could help identify the issue.