Help narrow down issue

Pretty straight foward. 2-3 month old built computer.
Syptoms:
-pc does not boot up. pSU seems to be working but no fans working and the light indicating the power has been triggered turns on then resets and so on.
-24 pin connector have to adjusted to turn on(works most of the time until recently)
-pc freezes, with loud noise from speakers and causes laptop to loose wifi connection
-BOD then reboots
-no display on monitor

Temps are reletively low. All fans work. Stock, no oc yet. Any ideas or suggestions to what may be causing this would be appreciated. Thx
3 answers Last reply
More about help narrow issue
  1. Please post complete system specs.

    Also clarify for me what this means:

    -24 pin connector have to adjusted to turn on(works most of the time until recently)
  2. CPU: i5 2500k(stock for now)
    Mobo: asrock z68 gen3 extreme 3
    Gpu:evga gtx670 ftw (stock)
    Ram:Samsung 8gb(2x4) Ddr3 1600(stock)
    Psu:corsair tx750
    -if I unplug or adjust the 24 pin connector(psu to mobo) I'll be able to boot up my pc.

    Thx for the response and whatever needs to be listed I'll do so.
  3. Do you know anyone you can borrow a similar capability PSU from to test with, or perhaps do you have another one laying around or in another PC?
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