This happened the last time I restarted my Exchange server. On a restart after the crash the system did a check disk and repaired some errors. Afterwards it had lost the schema.xml file for IIS and corruopted both storage groups for exchange. I would have just thought it was a disk problem until I found out my colleague up the street had an Identical problem. Too much of a coincedence! I mean identical, blue screen error, check disk on restart and then schema.xml missing and both exchange databases corrupt. We are both running similar systems with Intel S5000PAL motherboards. Memory Dump details BAD_POOL_CALLER (c2) The current thread is making a bad pool request. Typically this is at a bad IRQL level or double freeing the same allocation, etc. Arguments: Arg1: 0000000000000007, Attempt to free pool which was already freed Arg2: 000000000000121a, (reserved) Arg3: 0000000000000000, Memory contents of the pool block Arg4: fffffadf9c9a5510, Address of the block of pool being deallocated The only other relevant info I can get from the debugger is POOL_ADDRESS: fffffadf9c9a5510 BUGCHECK_STR: 0xc2_7 DEFAULT_BUCKET_ID: DRIVER_FAULT CURRENT_IRQL: 0 LAST_CONTROL_TRANSFER: from 0000000000000000 to fffffadf82d30ec0 STACK_TEXT: fffffadf`80f17c60 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : 0xfffffadf`82d30ec0 STACK_COMMAND: kb SYMBOL_NAME: ANALYSIS_INCONCLUSIVE FOLLOWUP_NAME: MachineOwner MODULE_NAME: Unknown_Module IMAGE_NAME: Unknown_Image DEBUG_FLR_IMAGE_TIMESTAMP: 0 BUCKET_ID: CORRUPT_MODULELIST Followup: MachineOwner --------- It looks as though the memory dump must also be corrupt, as I cannot get a list of modules.

Yes, Bug Check 0xC2: BAD_POOL_CALLER usually indicates below issues, - Faulty hardware drivers, you may need to check with hardware vendor for updated copy of all hardware drivers available. - Faulty hardware component itself failing and generating this bug check. You may need to replace the components in that case. - Third party softwares which uses kernel mode to load their drivers, like antivirus, backup softwares. You may also look for their software updates. BAD_POOL_CALLER? What the http://blogs.technet.com/askperf/archive/2008/08/29/bad-pool-caller-what-the.aspx Besides, post this query in Windows forum session to get rich and further info from Windows experts. Windows Forum:http://social.technet.microsoft.com/Forums/en-US/category/windowsserver Amit Tank | MVP Exchange Server | MCITP: EMA | MCSA: M | http://ExchangeShare.WordPress.com

Hi, I suggest you write a post on our Windows Server forum to resolve your system issue first. After the OS works well, we can focus on the Exchange database issue. Thanks, Elvis