I don't think your bsod is related to your new PSU, because your system has been running for 2 days without a problem.
Your latest dumpfile points to system related problems, both are SYSTEM_SERVICE_EXCEPTION (3b)
Also in your device manager i found:
<Device><![CDATA[Unknown USB Device (Device Descriptor Request Failed)]]></Device>
<PNP_Device_ID><![CDATA[USB\VID_0000&PID_0002\5&6D870B0&0&3]]></PNP_Device_ID>
<Error_Code><![CDATA[43]]></Error_Code>
You have a
SABERTOOTH 990FX R2.0 mainboard, there is a biosupdate BIOS 2501 with description
Enhance compatibility with some USB device. Also the previous 3 updates (2005,2014 and 2301) version all mentioned Improve system stability.
You are using version 1903 . So a biosupdate could be necessary. But pleasebe advised that flashing the BIOS is a very unforgiving process - and onemistake can physically damage your motherboard.
Analysing your driverlist, you have many many older/outdated drivers. Please update your drivers to windows 8.1 compatible drivers from here
ASUSTeK Computer Inc. -Support- Drivers and Download SABERTOOTH 990FX R2.0
Please update these older drivers. Links are includedto assist in looking up the source of the drivers. If unable to find an update,please consider it could be a possible BSOD cause or remove (un-install) theprogram responsible for that driver. DO NOT manually delete/rename the driveras it may make the system unbootable! :
Note:firstcheck the support/driver downloadsite of your OEM model or system(mainboard) for the latest windows 8.1 drivers.
AsUpIO fffff801`71bd0000 fffff801`71bd7000 Tue Aug 03 04:47:59 2010 (4c57835f) 0000bd68 AsUpIO.sys
Driver Description: ASUS hardware monitoring software related
Driver Update Site: ASUSTeK Computer Inc. -Support- Drivers and Download
ei2c fffff801`73eed000 fffff801`73ef6000 Wed Jun 29 03:51:37 2011 (4e0a8529) 00008adb ei2c.sys
mi2c fffff801`73ff7000 fffff801`74000000 Wed Jun 29 13:03:58 2011 (4e0b069e) 000098d6 mi2c.sys
Driver Description: probably from program WinI2C/DDC from nicomsoft.
Warning: WinI2C/DDC is retired, we do not support it anymore.
info:
WinI2C DDC - Access I2C bus of video card: DDC/CI protocol, EDID
ASUSFILTER fffff801`739e2000 fffff801`739f0000 Tue Sep 20 17:46:33 2011 (4e78b559) 0000de95 ASUSFILTER.sys
Driver Description: ASUS USB Hub filter driver
Driver Update Site: ASUSTeK Computer Inc. -Support- Drivers and Download
tap0901 fffff801`71fd6000 fffff801`71fe3000 Thu Nov 24 19:50:27 2011 (4ece91f3) 000154d4 tap0901.sys
Driver Description: TAP-Win32 Adapter V9 or
OpenVPN driver or COMODO
Driver Update Site: Downloads or
Login Requires registration
AiChargerPlus fffff801`73054000 fffff801`73055f80 Thu Apr 19 03:17:35 2012 (4f8f67af) 00003ae7 AiChargerPlus.sys
Driver Description: Asus Charger Driver
Likely BSOD cause - haven't seen recently (15Jan2013)
Driver Update Site: ASUSTeK Computer Inc. -Support- Drivers and Download
ndisrd fffff801`718f7000 fffff801`71901000 Thu May 31 05:03:33 2012 (4fc6df85) 0000a7d8 ndisrd.sys
Driver Description: Mionet driver/
WinpkFilter high performance packet filtering framework
Driver Update Site: MioNet| Your personal private network for PC remote access, webcam access software, backup, and file sharing
Rt630x64 fffff801`7381a000 fffff801`738c5000 Mon Jul 30 18:03:12 2012 (5016b040) 000a8d89 Rt630x64.sys
Driver Description: Realtek 8101E/8168/8169 NDIS 6.30 32-bit Driver
Driver Update Site: Realtek
asmtxhci fffff801`7308f000 fffff801`730f7000 Mon Aug 20 14:28:15 2012 (50322d5f) 000695bf asmtxhci.sys
asmthub3 fffff801`731b3000 fffff801`731d8000 Mon Aug 20 14:28:29 2012 (50322d6d) 00031b85 asmthub3.sys
Driver Description: Asmedia USB 3.0 driver
Driver Description: ASMedia USB 3.0 Hub driver
Driver Update Site: ASMedia Technology Inc. ????
AsIO fffff801`71bd7000 fffff801`71bdd000 Wed Aug 22 11:54:47 2012 (5034ac67) 0000ea4f AsIO.sys
Driver Description: Asus PCProbe Utility
Driver Update Site: http://support.asus.com/download/download.aspx
rtl8192se fffff801`73238000 fffff801`7338a000 Wed Mar 27 16:13:24 2013 (51530c94) 0012f4c7 rtl8192se.sys
Driver Description: Realtek Wireless LAN 802.11n PCI-E NIC NT Driver
Driver Update Site: Realtek