System service exception, page fault in nonpaged area BSOD. Flash too.

Welcome to the forum Jimjam,

Free up the start-up, nothing except the antivirus is usually needed.

• Startup Programs - Change
• Troubleshoot Application Conflicts by Performing a Clean Startup

Remove BitDefender and use MSE in its place.

Microsoft Security Essentials is recommended from a strict BSOD perspective, compatibility & stability
compared to other antivirus or internet security software. It is free and lightweight:-

• Microsoft Security Essentials - Free Antivirus for Windows
• Malwarebytes : Malwarebytes Anti-Malware removes malware including viruses, spyware, worms and trojans, plus it protects your computer
• Good and Free system security combination.
• How to Scan Your Computer With Multiple Antivirus Programs - How-To Geek

   Warning

Do not start the free trial of Malware Bytes; remember to deselect that option when prompted.

RTCore64.sys Mon Mar 11 11:32:06 2013 (513D6C56)
RivaTuner/EVGA Precision/MSI Afterburner (known BSOD issues w/Win7)
Driver Reference Table - RTCore64.sys

Use Revo Uninstaller to uninstall stubborn software. Opt for Advance Mode while uninstalling which allows you to remove leftover registry:-

• Download Revo Uninstaller Freeware - Free and Full Download - Uninstall software, remove programs, solve uninstall problems

Run the System File Checker that scans the of all protected Windows 7 system files and replaces incorrect corrupted, changed/modified, or damaged versions with the correct versions if possible:

• Click on the
• Type CMD on Search
• Left click and Run as Administrator
• Type SFC /scannow

Full tutorial here:

• SFC /SCANNOW Command - System File Checker

Install all updates including Service Pack One:

• Learn how to install Windows 7 Service Pack 1 (SP1)

Code:

Built by: 7600.16385.amd64fre.win7_rtm.090713-1255
Debug session time: Tue Jul  8 06:44:30.378 2014 (UTC + 6:00)
System Uptime: 0 days 8:04:37.910
BugCheck 50, {fffff900c3b20310, 0, fffff9600033c69d, 0}
Probably caused by : win32k.sys ( win32k!SFMLOGICALSURFACE::OwnsSurfaceCleanup+2d )
BUGCHECK_STR:  0x50
PROCESS_NAME:  dwm.exe
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨``
Built by: 7600.16385.amd64fre.win7_rtm.090713-1255
Debug session time: Wed Jul  2 03:17:09.892 2014 (UTC + 6:00)
System Uptime: 0 days 4:32:34.423
BugCheck 3B, {c0000005, fffff96000184283, fffff8800c362060, 0}
Probably caused by : win32k.sys ( win32k!HmgLockEx+a3 )
BUGCHECK_STR:  0x3B
PROCESS_NAME:  dwm.exe
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨``
Built by: 7600.16385.amd64fre.win7_rtm.090713-1255
Debug session time: Tue Jul  1 06:49:51.131 2014 (UTC + 6:00)
System Uptime: 0 days 11:16:14.663
BugCheck 3B, {c0000005, fffff96000154283, fffff8800cb21060, 0}
Probably caused by : win32k.sys ( win32k!HmgLockEx+a3 )
BUGCHECK_STR:  0x3B
PROCESS_NAME:  dwm.exe
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨``

Run Disk Check on your Hard Drive for file system errors and bad sectors on it:

• How to Run Disk Check in Windows 7

Upload a screenshot of your hard disk using Crystal Disk Info:

• CrystalDiskInfo - Software - Crystal Dew World
• Screenshots and Files - Upload and Post in Seven Forums

Make a hard drive test from the hard drive manufacturers website:

• Hard Drive Diagnostic Procedure

Test your Hard Drive with SeaTools:

• How to Use SeaTools for DOS and Windows Disk Check Utility

Check for heating issues using Speccy or HWMonitor. Upload a screen shot with either of the tools:

• Speccy - System Information - Free Download
• HWMonitor CPUID - System & hardware benchmark, monitoring, reporting
• Screenshots and Files - Upload and Post in Seven Forums

Take memtest. Run for 8 passes and test each stick in a know good slot for an additional 6 passes.

• RAM - Test with Memtest86+

The goal is to test all the RAM sticks and all the motherboard slots.

Check your motherboard manual to ensure the RAM sticks are in the recommended motherboard slots. Some motherboards have very specific slots required for the number of RAM sticks installed.

If you get errors, stop the test and continue with the next step.

1. Remove all but one stick of RAM from your computer (this will be RAM stick #1), and run Memtest86 again, for 7 passes.

*Be sure to note the RAM stick, use a piece of tape with a number, and note the motherboard slot.

If this stick passes the test then go to step #3.

2. If RAM stick #1 has errors, repeat the test with RAM stick #2 in the same motherboard slot.

*If RAM stick #2 passes, this indicates that RAM stick #1 may be bad. If you want to be absolutely sure, re-test RAM stick #1 in another known good slot.

*If RAM stick #2 has errors, this indicates another possible bad RAM stick, a possible motherboard slot failure or inadequate settings.

3. Test the next stick of RAM (stick #2) in the next motherboard slot.

*If this RAM stick has errors repeat step #2 using a known good stick if possible, or another stick.

*If this RAM stick has no errors and both sticks failed in slot#1, test RAM stick #1 in this slot.

4. If you find a stick that passes the test, test it in all the other motherboard slots.

If Part 2 testing shows errors, and all tests in Part 3 show errors, you will need to test the RAM sticks in another computer and/or test other RAM in your computer to identify the problem.

In this way, you can identify whether it is a bad stick of RAM, a bad motherboard, or incompatibility between the sticks.

   Information

Errors are sometimes found after 8 passes.

   Tip

Memtest should be done overnight.