Strange Black Screen

Hello there this issue happened only once and pc is fine atm just wonder could have caused that.
well, i did bootup my Pc just like the other days but for some reason after windows 7 loading screen, i got a black screen
without messages or mouse cursor , i could normaly hear the sound from the speakers from windows 7 but couldn't see anything, did restart and everything was fine, also just to be sure did like another 100 restarts and PC is fine. i think was just a Display Driver Bug or failure not sure. the only message that i found at event viewer was :
Log Name: System
Source: Microsoft-Windows-WER-SystemErrorReporting
Date: 09/02/2013 1:03:04
Event ID: 1001
Job Type: None
Level: Error
Keywords: Classical
User: N / A
Calculator: Rackdeath-PC
Description:
Computer was restarted after error checking. The bugcheck was: 0x00000116 (0xfffffa8007c234e0, 0xfffff88004077410, 0x0000000000000000, 0x000000000000000d). Saved in mapping file: C: \ Windows \ MEMORY.DMP. Reference ID: 020913-18564-01.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-WER-SystemErrorReporting" Guid="{ABCE23E7-DE45-4366-8631-84FA6C525952}" EventSourceName="BugCheck" />
<EventID Qualifiers="16384"> 1001 </ EventID>
<Version> 0 </ Version>
<Level> 2 </ Level>
<Task> 0 </ Task>
<Opcode> 0 </ Opcode>
<Keywords> 0x80000000000000 </ Keywords>
<TimeCreated SystemTime="2013-02-08T23:03:04.000000000Z" />
<EventRecordID> 119505 </ EventRecordID>
<Correlation />
<Execution ProcessID="0" ThreadID="0" />
<Channel> System </ Channel>
<Computer> Rackdeath-PC </ Computer>
<Security />
</ System>
<EventData>
<Data Name="param1"> 0x00000116 (0xfffffa8007c234e0, 0xfffff88004077410, 0x0000000000000000, 0x000000000000000d) </ Data>
<Data Name="param2"> C: \ Windows \ MEMORY.DMP </ Data>
<Data Name="param3"> 020913-18564-01 </ Data>
</ EventData>
</ Event>