BSOD at random times caused by random drivers

My PC keeps crashing and i have no idea why.

Dont use a BETA display driver.

Uninstall the installed display driver using DDU. Then install the CCC 14.4 WHQL only.

Also Uninstall Avast using Avast Uninstall Utility. Use Microsoft Security Essentials as your antivirus with windows inbuilt firewall, and free MBAM as the on demand scanner.

Let us know for any further BSOD after doing these two.
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Code:

fffff880`0786c6d8  fffff880`03ed7eccUnable to load image aswSnx.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for aswSnx.sys
*** ERROR: Module load completed but symbols could not be loaded for aswSnx.sys
 aswSnx+0x4fecc

Code:

BugCheck 1000007E, {ffffffffc0000005, fffff880110ec200, fffff88004053258, fffff88004052ab0}

Probably caused by : atikmdag.sys ( atikmdag+10200 )

Followup: MachineOwner
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Make it sure that you have the updated JAVA.

Code:

BugCheck 19, {3, fffff800032196f0, fffff800032196f0, d1fff800032196f0}

Probably caused by : Pool_Corruption ( nt!ExFreePool+503 )

Followup: Pool_corruption
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Test your RAM modules for possible errors.

How to Test and Diagnose RAM Issues with Memtest86+

Run memtest86+ for at least 8 consecutive passes.

If it start showing errors/red lines, stop testing. A single error is enough to determine that something is going bad there.

If it does not show any error, enable Driver Verifier to monitor the drivers.

Driver Verifier - Enable and Disable

Run Driver Verifier for 24 hours or the occurrence of the next crash, whichever is earlier.

   Information

Why Driver Verifier:
It puts a stress on the drivers, ans so it makes the unstable drivers crash. Hopefully the driver that crashes is recorded in the memory dump.

How Can we know that DV is enabled:
It will make the system bit of slow, laggy.

   Warning

Before enabling DV, make it sure that you have earlier System restore points made in your computer. You can check it easily by using CCleaner looking at Tools > System Restore.

If there is no points, make a System Restore Point manually before enabling DV.

   Tip

• If you fail to get on the Desktop because of DV, Boot into Advanced Boot Options > Safe mode. Disable DV there. Now boot normally again, and try following the instruction of enabling DV again.
• If you cannot boot in Safe mode too, do a System Restore to a point you made earlier.

Let us know the results, with the subsequent crash dumps, if any.