Help with Costum Build Problem

stalkingdatoast

Honorable
Jul 29, 2012
63
0
10,630
I builded this computer few months ago and couple of weeks ago my power supply went bad, i decided to upgrade couple of things on the pc, this is my current PC

Asus Sabertooth 990FX R2.0
AMD FD8350FRHKBOX FX-8350
16gb 1600 ram
XFX FX-785A-CDFC AMD Radeon HD 7850 Double Dissipation Edition Video Card - 2GB GDDR5
My power supply is 750 watts.
1.5tb harddrive ( not a SSD )

I added a SSD 160GB and im only running OS and few programs i use all the time. the 1.5tb harddrive is been use as storage only. I also upgraded the power supply to the corsair cx750.

After upgrading this and also getting a new bigger case for the PC, i continue to have usb malfunctioning all the time, its happening with another 1.5 external HD i have and even if i move it to a different port, i continue getting the message that its malfunctioning.

Could this be my mother board?
Any other recommendations on upgrade for this PC?

Thanks in advance