Bug Check Code 0x50: http://msdn.microsoft.com/en-us/library/ff559023%28v=VS.85%29.aspx Run chkdsk /r /f and check again. Also, check your disk cables. If this does not help, it will be better to contact your manufacturer Technical Support. This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner 2010 / 2011 Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Applications Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows 7, Configuring Microsoft Certified IT Professional: Enterprise Administrator

On changing some settings and rebooting I get BSOD with error message: *** STOP: 0X00000050 (0X95A00000, 0X00000000, 0X81AE69FD, 0X00000002) *** Ntfs.sys - Address 81AE69FD base at 81A0C000, Datestamo 4a5bbf45 I have tried using F8 and safe startup but gets to the Windows flying logo then bombs out to the Blue Screen again with the same error. I've updated the bios with no change. I'm on Windows 7 Ultimate