crash dump 1:
Windows 7 Kernel Version 7600 MP (6 procs) Free x64
Built by: 7600.17273.amd64fre.win7_gdr.130318-1532
System Uptime: 0 days 3:38:58.105
PROCESS_NAME: dwm.exe
BugCheck 50, {fffff900c2982d44, 0, fffff9600023d344, 0}
PAGE_FAULT_IN_NONPAGED_AREA (50)
Invalid system memory was referenced. This cannot be protected by try-except,
it must be protected by a Probe. Typically the address is just plain bad or it
is pointing at freed memory.
Arguments:
Arg1: fffff900c2982d44, memory referenced.
Arg2: 0000000000000000, value 0 = read operation, 1 = write operation.
Arg3: fffff9600023d344, If non-zero, the instruction address which referenced the bad memory
address.
Arg4: 0000000000000000, (reserved)
5: kd> k
Child-SP RetAddr Call Site
fffff880`08e97858 fffff800`02f4e694 nt!KeBugCheckEx
fffff880`08e97860 fffff800`02ecc96e nt! ?? ::FNODOBFM::`string'+0x41db7
fffff880`08e979c0 fffff960`0023d344 nt!KiPageFault+0x16e
fffff880`08e97b50 fffff960`00260749 win32k!GreSetRedirectionSurfaceSignaling+0x104
fffff880`08e97ba0 fffff800`02ecdad3 win32k!NtGdiHLSurfSetInformation+0x209
fffff880`08e97c20 000007fe`ff654efa nt!KiSystemServiceCopyEnd+0x13
00000000`0223f658 00000000`00000000 0x000007fe`ff654efa
This is a bugcheck in windows Desktop service manager
Recommend:
install the windows 7 service pack and updates. (this just has to have been fixed by now)
workaround would be to start cmd.exe as a admin
then turn off the service: Desktop window manager session manager, then config the service to be disabled
net.exe stop UxSms
sc.exe config uxsms start= disabled
here is info on what the service does:
http://en.wikipedia.org/wiki/Desktop_Window_Manager
Note: second crash dump was related to the same issue, most likely the same cause and solutions.