Possible PSU problem?

Tonib000y

Honorable
Dec 14, 2013
1
0
10,510
Hello every1, this is my very 1st post on the tom's Hardware so i apologize for any mistake that i will be doing on this post if there will be any. Anyway, i came here so that i could ask my specific problem, ive been googling the web for my answer but not enough info. so here goes my problem.

I've just replaced my mobo with a new 1, along with a new processor, v.card and a new Ram 1 month ago, up until last week, everything seems to be playing smooth,now my problem is that some of my USB ports including PS2 port are not responding. This happens after the sudden restart of my PC last week, before the restart my PS2 Port is working, but after the restart its not anymore, now, the only ports that working are 2 USB ports Which is the 1 near the LAN port and also the 3.0 USB port.
Methods i try to isolate the problems:

BIOS set up, everything's fine no ports disabled.
restart, no beeping sound.
Restarts with 1 RAM stick.
restart CMOS through battery.

additional info, before the problem happens i was having random restarts when i play PC games on max settings. such as AC 4 Black Flag. i play for almost 10+ hrs per day (yea, i'm an addict i know i know)

PC INFO:

MOBO: Z87M-Plus Asus
Processor: Intel-Core i7 4770k
Graphics Card: NVIDIA GeForce GTX 660Ti
RAM: 16GB of Ram (2 8gb Sticks)
Power Supply: AcBel R8 Power 550
OS: Windows 7 Ultimate 64 Bit

So far i could use the PC when im only surfing the net, Last night while i was playing DOTA 2, it restart and after that, it restarted like 5 times then finally i was able to see the bios then it restarts again. So.. any advice would help. Thanks in advance.