Hello,
My best guess is that the RAM you added is not the same speed of the RAM that was already installed. Download
CPU-Z and post screenshots of the Memory and SPD tabs. On the SPD tab, take screenshots of both sticks of RAM (meaning you have to change the selection to the other slot).
A Preferred Method of Uploading/Posting Screen Shots
Also, while waiting for me to reply again, run Memtest86 with both sticks installed for 8 passes.
RAM - Test with Memtest86+
Possibly unrelated to your BSODs, AVAST was having trouble, which makes me suspect your older Realtek
drivers may be causing problems. Install the latest ones from here:
Realtek Code:
Rt86win7.sys Thu Feb 26 04:04:22 2009 (49A65B16)
...Summary of the dumps: Code:
Built by: 7601.17713.x86fre.win7sp1_gdr.111025-1505
Debug session time: Tue Feb 28 06:11:49.500 2012 (UTC - 5:00)
System Uptime: 0 days 0:11:25.998
*** ERROR: Module load completed but symbols could not be loaded for fileinfo.sys
BUGCHECK_STR: 0x19_20
DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT
PROCESS_NAME: System
FAILURE_BUCKET_ID: 0x19_20_fileinfo+5bc3
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