The recent BSOD is caused by your ATI video card. Are you sure you have updated to the latest driver. Please double check by going to the ATI website and see if there's any updated driver available.
I'd also suggest you to do a clean...
Hi and welcome to the forums.
It seems Avast anti virus is causing BSODs for you.
Uninstall Avast anti virus completely using the Avast! Removal Tool and then restart the computer.
We recommend using the built-in Windows Defender along with Malware Bytes.
Also, run System File...
Run System File Checker to verify/repair the integrity of system files.
Full tutorial here: SFC /SCANNOW Command - System File Checker - Windows 7 Support Forums
Also, run chkdsk /f to repair corrupt sectors in the hard drive.
Full tutorial here...
Does it work on another browser? If yes then you should try clearing the chrome browsing history and cache by pressing Ctrl+Shift+Delete. From the dropdown, select "The Beginning of Time" and click Clear Browsing Data (See pic below)