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Repeated BSOD's mostly in hal.dll, nearly always while unattended
Win7 Pro on a Dell Latitude D830 with 3GB RAM. System is stock except that over the years I've replaced the original WiFi module with a faster OEM one, added an OEM Bluetooth module, and of course migrated to larger/faster drives. I was an XP die-hard, so my 7 experience actually isn't very lengthy. BIOS is latest, and Windows Updates are current.
This problem started happening shortly after I installed 7 (on a new WD drive), but was very infrequent - maybe once every month or two. Lately it seems to be getting more frequent. It almost always happens in the 6-6:30am time range. 80% of the time the crash occurs in hal.dll; the rest are in other system objects or drivers such as dxgkrnl.sys, ntoskrnl.exe, or nwifi.sys. The only thing running at that time of day (at least that is user-invoked) is Firefox, Outlook, and a predefined backup profile in SyncBackPro. If I run that same profile manually it never has a problem, so I'm not sure that's a clue, and the problem has happened a few times at other times during the night, before SyncBackPro even starts. I've tried running various memory diagnostics, drive checkers, etc., all with no problems found.
I'm attempting to upload my diagnostic zip file. Here's a representative screen shot from BlueScreenViewer:
Any help will be greatly appreciated!