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Repeated BSOD on reboot (before login) 0xD6 portcls.sys (audiodg.exe)
Hello,
I had a Norton 360 popup that it had detected a threat and blocked it. I ran a full scan with Malware bytes, Norton, and a few things were cleaned up. Then I started getting some random BSODs. I then activated Driver Verifier, and the BSODs now occur without fail on reboot prior to he login. I am running Win7 Ult x64 with 8gb RAM. I started anaylzying the minidumps and have attached the results here. I suspected that whatever triggered the Norton alert and then got cleaned up probably had messed up something. I ran SFC /scannow but it checked out OK. I ran memtest86 for 12 hours and it found 1 error bit on one slot that it indicated was ECC correctable. I swap SDRAM strips around (and in and out) anyways, but BSOD was always the same at reboot! Runs fine in Safe Mode(s). I did chkdsk /R c: - all OK. I updated all drivers on my Gigabyte P55-UD4P (latest bios). I disabled the onboard Intel HD audio, still BSOD. I ran Avast boottime full scan and it found some things and cleaned but still the same BSOD at bootup. Could be hardware, but I kind of doubt it. I also reset all BIOS setting to factory defaults. I did not try to reseat/swap the CMOS battery. I did remove all USB and audio cable attachments. I also ran Startup Repair and it found no problems.
The WinDbg results attached are labelled by the minidump dates. The ones on 09/18 are BEFORE Driver Verifier was turned up on ALL drivers. The two from 09/22 are with Driver Verifier which pointed me to portcls.sys (called in audiodg.exe) with the "attempting to access memory beyond the end of the allocation" on the BSOD.
Any thoughts before I wipe and reinstall??? I am stumped. I might also try booting Fedora or Knoppix Linux LiveCD and see if it has any problems (which would then imply faulty hardware).
Many thanks in advance!!
Mark