Windows 7: BSOD many times in a day, error 0x0000001E

Start Menu\Programs\AVG	Public:Start Menu\Programs\AVG	Public
Start Menu\Programs\AVG PC Tuneup	Public:Start Menu\Programs\AVG PC Tuneup	Public
Start Menu\Programs\AVG PC Tuneup\Utilities	Public:Start Menu\Programs\AVG PC Tuneup\Utilities	Public
Start Menu\Programs\MSI Afterburner	Mother\Chris:Start Menu\Programs\MSI Afterburner	Mother\Chris
Start Menu\Programs\MSI Afterburner\SDK	Mother\Chris:Start Menu\Programs\MSI Afterburner\SDK	Mother\Chris

Please uninstall AVG, it's known to cause BSoDs on some systems.
→ AVG Removal Tool
Also the "Tune-up Utilities" often turn out to be "Tune-down" in the end.
They can bork Windows 7 beyond repair.
Use the Free version of Revo Uninstaller to remove the tune-up stuff.

BugCheck 1E, {ffffffffc0000005, fffffa800838cbb0, 0, 7efa8000}
Probably caused by : ntkrnlmp.exe ( nt! ?? ::FNODOBFM::`string'+48d3d )
STOP 0x0000001E: KMODE_EXCEPTION_NOT_HANDLED 
Usual causes:  Device driver, hardware, System service, compatibility, 
Remote control programs, memory, BIOS
----------
STOP 0x00000050: PAGE_FAULT_IN_NONPAGED_AREA  
Usual causes:  Defective hardware (particularly memory - but not just RAM), 
Faulty system service, Antivirus,  Device driver, NTFS corruption, BIOS
BugCheck 50, {fffff8a001b07000, 0, fffff80002f229ca, 0}
Could not read faulting driver name
Probably caused by : cng.sys ( cng!HashFirstUserModeCallerBlobs+a5 )
----------
STOP 0x00000124: WHEA_UNCORRECTABLE_ERROR
Usual causes:  Hardware, Incompatibility, May be driver corruption
BugCheck 124, {0, fffffa80083585a8, 0, 0}
Probably caused by : hardware

As suggested, revert to factory clocks if overclocking cause you got BugCheck 124 and remove MSI afterburner.
Go through this thread for best reference.
→ Stop 0x124 - what it means and what to try

Run Disk Check on your hard disk hard disk for file system errors and bad sectors on it
→ Disk Check

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

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

→ RAM - Test with Memtest86+
→ Guide to using Memtest86+ - Geeks to Go Forums

Code:

Driver	c:\windows\system32\drivers\atikmpag.sys (8.14.1.6268, 360.00 KB (368,640 bytes), 7/27/2012 6:14 PM)

Update to the latest drivers for your ATI card

1. Download and install Driver Sweeper:
   → |MG| Driver Fusion (Driver Sweeper) 1.2.0 Download
2. Download the auto-detect tool for AMD.
   → AMD Driver Autodetect
3. Boot into Safe Mode from Advanced Boot Options:
   → Advanced Boot Options
4. Type in Driver Fusion in Search
5. Remove all drivers
6. Boot normally now, and install the latest drivers from the
   auto-detect program you downloaded.

Then take FurMark Test:
Video Card - Stress Test with Furmark
→ Video Card - Stress Test with Furmark

Monitor your temps with Speccy during these tests
→ Speccy - System Information - Free Download