Google Chrome's error messages are designed to give you some kind of clue as to what has gone wrong, and in the case of an "Aw, Snap!" message this means that a Web page has crashed unexpectedly. If the error occurs persistently on the same page, it's likely there's a problem with the way it has been encoded. If the error appears on multiple pages, it's more probable that an issue with Google Chrome itself is to blame.
Reload the affected page to see if the issue is resolved. If the problem persists with one site or page in particular, contact the administrator or owner of the site to report the bug.
Temporarily disable the security software running on your computer and relaunch Google Chrome. If the browser works without issue, a conflict with your anti-virus or firewall application might be causing the problem. Ensure your security tools are updated to the latest available versions and where necessary create an exception to allow Google Chrome to run without interference (check the help files supplied with your security software for exact instructions).
Disable the extensions running on top of Chrome one by one to see if an add-on is causing the problem. Open the Chrome menu (three horizontal bars) then choose "Tools" and "Extensions." Untick the "Enabled" box next to an extension then restart Chrome each time to check if the error continues to appear. If you do find a particular add-on is to blame, you'll need to disable it permanently or check for an updated bug-free version.
Run a thorough system scan using your installed security tools and remove any detected malware. A malware infection may be interfering with Google Chrome and preventing it from accessing Web pages in the normal way. If you suspect a malware tool is evading your existing security software, install an on-demand scanner such as Spybot Search And Destroy or Microsoft Safety Scanner as an extra layer of protection.
Create a new user profile for Google Chrome if the "Aw, Snap!" error message persists. A corrupted user profile can cause this alert, and creating a fresh new one should fix the issue. Find Chrome's default folder, which in Windows XP is at "%USERPROFILE%\Local Settings\Application Data\Google\Chrome\User Data\" and in later versions is at "%LOCALAPPDATA%\Google\Chrome\User Data\" (enter the string shown into the address bar of any Windows Explorer or File Explorer window). Rename the "Default" folder as "Backup default" and restart Chrome to generate a new user profile.
As a general rule ensure you are always running the latest version of Google Chrome and the Windows operating system. This ensures you have the latest bug fixes and compability updates applied and reduces the chances of a conflict with other hardware or software installed on your system.
If you are running Google Chrome on a Mac computer, the default folder can be found at "~/Library/Application Support/Google/Chrome/Default." On Linux, it's at "~/.config/google-chrome/Default."