Need help with my RIG

[pocketbell]

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good day!
i bought a second hand i5 gaming rig here and asked my friend to assemble it. when we first tried to power it, it did turn on for at least 2 seconds but then it went off. (tried it like 3 times)
we found out that he forgot to put the sata connector coming from the PSU to the hhd..we figured that out, but, he also forgot to put the cord that gives power to the mobo.
after making sure that everything has been connected properly, we tried to turn it on again and it did work. it was running perfectly. so we then decided to turn it off and put the monitor on to install the OS, etc.

after installing the monitor, we were surprised as it won't turn on now.
it didn't even start.

i'm pretty sure that the specs i bought was in a good working condition as i have tested it on the day that i bought it.
any idea what could have caused this?
and if naa moy ma suggest na shop or person na duol dre sa pardo, please let me know para ma duol nako ug mapatan aw nako ni.
thanks!

procei: i5 3rd gen
vcard: sapphire hd 7770
mobo: gigabyte z77-d3h
memory: 8gig ballistic ram
PSU: silberstone strider plus 500w (80 plus bronze)
500g WD hhd

[Echelnalf]

@pocketbell

Naa ni video card? Basin sa onboard gi taOd ang monitor..

[Iamalbertrebs]

unsay PSU imong gigamit?
naa ni gitaod videocard?.. or better state here the complete specs of ur rig

[dhekoy33]

check psu also vcard.

[buddy&sale]

specs specs specs sa pc.

[pocketbell]

procei: i5 3rd gen
vcard: sapphire hd 7770
mobo: gigabyte z77-d3h
memory: 8gig ballistic ram
PSU: silberstone strider plus 500w (80 plus bronze)
500g WD hhd

[Iamalbertrebs]

try ayaw sa itaod ang video card...(isolate lang ba) first set up proce , mobo ,memory og PSU ipaslak tanan.. apil ang para monitor if modagan... add hdd.. kay basig naay short sa imong mga components maong dli modagan

[tabs14]

relax lang ts..
tan awa lang kon unsa wa ma connect ug tarong.
basin na off ang avr o na unplug ba noon.

[pocketbell]

@Iamalbertrebs
if in case short circuit ni bah, unsay pinaka worst na mahitabo? i mean, unsay pwede maguba ug unsay ma-alisdan? or should i not worry?

[Iamalbertrebs]

did you tried it? kato akog gi suggest?
i isolate sa
run .. mobo + procie + ram + PSU if modagan proceed to (if dli modagan basig psu/mobo/ram ang problema)
run... mobo + procie + ram + PSU + monitor if modagan/modisplay
run... mobo + procie + ram + PSU + hdd + monitor if modisplay og mo boot proceed to
+ vcard (in which akong gituuhan usa sa culprit..
or PSU..


btw sa pagpalit nimo unsa ang mga items ang gipang test ang maayo pa?