Miért fagy le a conhost. Exe?

Problem signature:

Problem Event Name: APPCRASH

Application Name: conhost.exe

Application Version: 6.1.7601.18015

Application Timestamp: 50b826c0

Fault Module Name: ntdll.dll

Fault Module Version: 6.1.7601.17725

Fault Module Timestamp: 4ec4aa8e

Exception Code: c0000005

Exception Offset: 000000000009970a

OS Version: 6.1.7601.2.1.0.768.3

Locale ID: 1038

Additional Information 1: 4c0d

Additional Information 2: 4c0d4d78887f76d971d5d00f1f20a433

Additional Information 3: 4c0d

Additional Information 4: 4c0d4d78887f76d971d5d00f1f20a433

A hardware:

3.2 ghz 4 magos ivy bridge intel i-5

windows 7 home prem. sp1

8gb ram ddr3

64 bit

Akkor szokott lefagyni mikor az unetboot programmal próbálok ISO-t telepíteni usb-re. Eddig jól ment.