0x1A and 0x3B, 0x1A is either bad memory or bad drivers and 0x3B looks like memory corruption.
Please test the memory using MemTest86+
Probably caused by : memory_corruption
Run MemTest86+ to analyse your RAM. MemTest86+ - Test RAM - Windows 7 Forums
MemTest86+ needs to be run for at least 8 passes
for conclusive results. Set it running before you go to bed and leave it overnight. We're looking for zero errors
here. Even a single error will indicate RAM failure.
Please fill in your system specs
Please follow this tutorial
and download the tool. The tool will give you detailed information about your system specs, please fill in your system specs more completely including PSU, cooling system and other used stuff. PSU, cooling system and other used stuff are not identified by the tool.
How to fill in your system specs: