Bsod ntoskrnl+748c0

My first post! I keep getting BSODs with various error codes. I downloaded and used Blue Screen View. It seems all (with 1 exception) of the .dmp files have the the crash address of NTOSKRNL.exe+748C0. I keep researching and they results say there's a bad driver in the system. I ran Verifier and it found a problem with Avast Anti-virus. I deleted it and all register entries for Avast; I'm now using Bitdefender. Ran Verifier on it and there were no problems.

Help!
Thanks!
M

Processor: AMD Athlon II X4 635
Memory: 8GB
MB: Foxconn
Video: GeForce 315 Nvidia
OS: Windows 7 SP1; up to date patches

Before posting a BSOD thread, please read the instructions here: Blue Screen of Death (BSOD) Posting Instructions

There are various different BSODs including stop 0x51. So there is a chance of an infection there. Do two things.

Scan the system for possible virus infection with the following programs.

• Anti-rootkit utility TDSSKiller
• Windows Defender Offline

Stress test the Graphics Card using Furmark.

Video Card - Stress Test with Furmark

Take a screenshot of the furmark window before closing it. Upload the screenshot for us. Also let us know if you have experienced any crash/BSOD and/or artifacts during the test.

Let us know the result. A camera snap of the memtest86+ window before closing the program will be nice.

Also upload your MSINFO32.nfo file.

1. Click on the start button
2. Type "msinfo32" (without quotes) in the search bar of the start menu, click the resulting link. It will open the System Information window.
3. File>Save. In the "File Name" filed, put "MSINFO32" (without Quote), give the save location to desktop, and click the "save" button.
4. Give the time for processing, it will save a .nfo file on your desktop.
5. Zip it, and upload it following the instruction.

How to Create a System Information File in Windows.

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Code:

BugCheck E3, {fffffa800a2743d8, fffffa800a2c7060, 0, 2}

Probably caused by : dxgmms1.sys ( dxgmms1!VidSchiAdjustWorkerThreadPriority+191 )

Followup: MachineOwner
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Code:

BugCheck 1A, {403, fffff680000594a0, c030000230103867, fffff68000058bea}

Probably caused by : ntkrnlmp.exe ( nt! ?? ::FNODOBFM::`string'+30f8c )

Followup: MachineOwner
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Code:

BugCheck 51, {1, fffff8a01a0a6410, 834808c4, 465}

Probably caused by : discache.sys ( discache!DisCreateObjectAttributeStore+ec )

Followup: MachineOwner
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Remove the Crucial RAM that is there is slot 0. Using RAMs from different brands is not a good idea.