P67A-C43 usb/freeze problem

Question

For quite a long time now I have had problems with the machine freezing and requiring a reboot.  It seems to happen at random, perhaps once a day.  Its just happened again, this time when I plugged in a usb hard to one of the ports.  I've installed the latest intel series 6 chipset driver.  I could be wrong but it seems to me that the underlying problem is usb related. 
Some years ago I shared this problem on this forum when the freezes were happening multiple times per day.  The forum solution (thanks Svet yet again)  was to increase the voltage of my Corsair Ram to 1.65v - sounds high but that's what the manufacturer specifies.  The freezes still occurred but much less frequently.
I really would like to see this problem disappear and would appreciate any help.

Answer 1

I've run one iteration of Memtest so far which showed no errors.  I'll run a 5 iteration one overnight (takes a long time).
I decided to run a a HW Monitor report, a truncated version is below.  This shows several things that worry me.
1.   The +12v rail on the psu shows only 9.06 volts which looks too low. The psu is nearly 6 years old and could be failing
2.   Temperature 1 on the Fintek F71889A chip seems high (max 78degC).  I'm not sure what this is how to address this if it is a problem.
CPUID HWMonitor Report
HWMonitor version   1.2.6.0
Monitoring
Mainboard Model      P67A-C43 (MS-7673) (0x000003EA - 0x52735B20)
LPCIO
LPCIO Vendor      Fintek
LPCIO Model      F71889A
LPCIO Vendor ID      0x1934
LPCIO Chip ID      0x1005
Config Mode I/O address   0x4E
Config Mode LDN      0x4
Config Mode registers   
Hardware Monitors
Hardware monitor   Fintek F71889A
   Voltage 0   3.36 Volts [0xD2] (+3.3V)
   Voltage 1   1.22 Volts [0x99] (CPU VCORE)
   Voltage 2   1.86 Volts [0x74] (VIN2)
   Voltage 3   1.38 Volts [0x75] (VIN3)
   Voltage 4   5.72 Volts [0x88] (+5V)
   Voltage 5   9.06 Volts [0x67] (+12V)
   Voltage 6   2.08 Volts [0x82] (VIN6)
   Voltage 7   3.22 Volts [0xC9] (VSB3V)
   Voltage 8   3.33 Volts [0xD0] (VBAT)
   Temperature 0   45°C (113°F) [0x2D] (TMPIN0)
   Temperature 1   71°C (159°F) [0x47] (TMPIN1)  Max 78°C
   Temperature 2   33°C (91°F) [0x21] (TMPIN2)
   Fan 0      813 RPM [0x735] (FANIN0)
   Fan 2      792 RPM [0x765] (FANIN2)
   Fan PWM 0   35 pc [0x59] (CPU)
   Fan PWM 1   65 pc [0xA6] (System Fan 1)
   Fan PWM 2   65 pc [0xA6] (System Fan 2)
Hardware monitor   NVIDIA NVAPI
   Temperature 0   67°C (152°F) [0x43] (TMPIN0)
Processors
Number of processors      1
Number of threads      4
Processors Information
Processor 1         ID = 0
   Number of cores      4 (max 8)
   Number of threads   4 (max 16)
   Name         Intel Core i5 2500K
   Codename      Sandy Bridge
   Specification      Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz
   Package (platform ID)   Socket 1155 LGA (0x1)
   CPUID         6.A.7
   Extended CPUID      6.2A
   Core Stepping      D2
   Technology      32 nm
   TDP Limit      95.0 Watts
   Tjmax         98.0 °C
   Core Speed      3292.1 MHz
   Multiplier x Bus Speed   33.0 x 99.8 MHz
   Stock frequency      3300 MHz
   Instructions sets   MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, EM64T, VT-x, AES, AVX
   L1 Data cache      4 x 32 KBytes, 8-way set associative, 64-byte line size
   L1 Instruction cache   4 x 32 KBytes, 8-way set associative, 64-byte line size
   L2 cache      4 x 256 KBytes, 8-way set associative, 64-byte line size
   L3 cache      6 MBytes, 12-way set associative, 64-byte line size
   FID/VID Control      yes
   Turbo Mode      supported, enabled
   Max non-turbo ratio   33x
   Max turbo ratio      60x
   Max efficiency ratio   16x
   Min Power      60 Watts
   O/C bins      unlimited
   Ratio 1 core      60x
   Ratio 2 cores      60x
   Ratio 3 cores      60x
   Ratio 4 cores      60x
   TSC         3292.4 MHz
   APERF         3691.5 MHz
   MPERF         3292.6 MHz
Storage
Drive   0
   Device Path      \\?\ide#diskwdc_wd20ezrx-00dc0b0____________________80.00a80#5&16c0005a&0&0.0.0#{53f56307-b6bf-11d0-94f2-00a0c91efb8b}
   Type         Fixed
   Name         WDC WD20EZRX-00DC0B0
   Capacity      1863.0 GB
   SMART Support      Yes
Drive   1
   Device Path      \\?\usbstor#disk&ven_seagate&prod_desktop&rev_0130#2ghn0vp5____&0#{53f56307-b6bf-11d0-94f2-00a0c91efb8b}
   Type         Fixed
   Name         Seagate Desktop
   Capacity      1863.0 GB
   SMART Support      Yes
Drive   2
   Device Path      \\?\usbstor#disk&ven_wd&prod_my_book_1130&rev_1016#5743415a4131393739373138&0#{53f56307-b6bf-11d0-94f2-00a0c91efb8b}
   Type         Fixed
   Name         WD My Book 1130
   Capacity      1863.0 GB
   SMART Support      Yes
USB Devices
USB Device         Generic USB Hub, class=0x09, subclass=0x00, vendor=0x8087, product=0x0024
USB Device         USB Input Device, class=0x00, subclass=0x00, vendor=0x045E, product=0x00CB
USB Device         CanoScan 8800F, class=0x00, subclass=0x00, vendor=0x04A9, product=0x1901
USB Device         USB Mass Storage Device, class=0x00, subclass=0x00, vendor=0x0BC2, product=0x3300
USB Device         Generic USB Hub, class=0x09, subclass=0x00, vendor=0x8087, product=0x0024
USB Device         Generic USB Hub, class=0x09, subclass=0x00, vendor=0x05E3, product=0x0605
USB Device         USB Mass Storage Device, class=0x00, subclass=0x00, vendor=0x1058, product=0x1130
Graphic APIs
API            NVIDIA I/O
API            NVIDIA NVAPI
Display Adapters
Display adapter 0   
   Name         NVIDIA GeForce 7300 GS
   Board Manufacturer   GIGABYTE Technology
   Revision      A3
   Codename      G72
   Technology      90 nm
   PCI device      bus 1 (0x1), device 0 (0x0), function 0 (0x0)
   Vendor ID      0x10DE (0x1458)
   Model ID      0x01DF (0x3413)
[ ERROR: SPECIFIED ATTACHMENT MISSING ]