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Your dumps do indicate memory corruption and graphics problem Code:
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* Bugcheck Analysis *
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Use !analyze -v to get detailed debugging information.
BugCheck 4E, {99, 1394a0, 3, 172659}
Probably caused by : memory_corruption ( nt!MiBadShareCount+4c )
Followup: MachineOwner
STOP 0x0000004E: PFN_LIST_CORRUPT For memory start with memtest86+ overnight for 8 passes:
RAM - Test with Memtest86+ BSOD Index Code:
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* *
* Bugcheck Analysis *
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Use !analyze -v to get detailed debugging information.
BugCheck 116, {fffffa8006e584e0, fffff880042af26c, 0, d}
*** WARNING: Unable to verify timestamp for atikmpag.sys
*** ERROR: Module load completed but symbols could not be loaded for atikmpag.sys
Probably caused by : atikmpag.sys ( atikmpag+926c )
Followup: MachineOwner
VIDEO_TDR_FAILURE (116) For your graphics card, go through this thread:
STOP 0x116: VIDEO_TDR_ERROR troubleshooting
Post back when you're done