ntdll.dll error on startup

Right after update unity to version 5.2.3 (installed Visual Studio) unity stopped working. Also even if I install previous version unity doesn't start.

Anyone can help me with this problem?

Below is the Problem signature : Event name problem: APPCRASH Application name : Unity.exe Application version : 5.2.3.53610 Date Stamp / Application Time : 5648f34c Module name with failures: ntdll.dll Module version Failures: 6.3.9600.18007 Stamp Date / Time Module with failures: 55c4c16b Exception code : C0000005 Exception deviation: 000000000003b189 OS Version : 6.3.9600.2.0.0.256.48 Region ID: 2070 Additional Information 1: 9572 Additional information 2: 95720aa5e9798fcfb6b0795c7504426f Additional Information 3: cf3a Additional information 4: cf3a1274d0daa25803dafd2b4efd7fb8