I was playing just last night and today the game is crashing and won't even startup after today's update. Verified integrity of files, restarted computer and still no luck.

Windows 7

Problem signature:
Problem Event Name: APPCRASH
Application Name: dota2.exe
Application Version: 0.0.0.0
Application Timestamp: 5e5d54ae
Fault Module Name: atiumd64.dll
Fault Module Version: 25.20.14003.1012
Fault Module Timestamp: 5bc77472
Exception Code: c0000005
Exception Offset: 000000000000205d
OS Version: 6.1.7601.2.1.0.768.3
Locale ID: 1033
Additional Information 1: 9e7f
Additional Information 2: 9e7f483976defd7e1e446a9b35d77863
Additional Information 3: c881
Additional Information 4: c881875bfcb95b813907b47ca79aa425

Read our privacy statement online:
http://go.microsoft.com/fwlink/?link...8&clcid=0x0409

If the online privacy statement is not available, please read our privacy statement offline:
C:\Windows\system32\en-US\erofflps.txt