Computer not starting up after blackout.

[Karnac]

Troubleshooting Computer Power

[chuchuboi]

ok so i tested the connectors and everything is 0  except for the standby power one (purple).

on the chart, its suppose to be +5,  but i am getting +8.


I assume then that the power supply is dead and needs to be replaceD?

[Computer_Commando]

Remove power cord from wall.  Remove all connectors from motherboard and drives.  You can leave psu mounted in case.  Get a paper clip and short the Green wire with one of the grounds (14 to 15 or 14 to 13). Connect power cord to wall.  This should turn the power supply on.

This tests the power supply with no loads.  If something else is shorted the psu would not turn on, so it could be good and something else is bad.  It's unlikely, but it only takes 10 minutes.

[chuchuboi]

Sorry for late reply, was on vacation.

APC denied my claim so the *censored* with them.


Last week i bought a cheap refur cpu for my dad and i ended up ripping apart the old p3 he had.  i took out his old psu and tried it on my p4.

his p3 had a 300w psu.

my p4 is using a 400w  and also a atx12v wire.

i unplugged all components from both cpus and just connected the psu to motherboards.

test 1:  put 300w psu into p4(broken cpu).  starts up.
test 2: put 400w psu into p3(working cpu).   starts up.
test 3: put 400w psu back into the p4(broken cpu).   no start up.

my friend told me to use the 300w, but im scared since it doesn't have a atx12v wire, it mite screw things up. and i checked online for pricing and a new psu isn't too expensive...  should i just buy a new one?

or is there some other problem i am not aware off?

[patio]

Get a new PSU...

[chuchuboi]

if thinking of getting another 2 sticks of ram for my cpu. a lil xmas present for myself..

with a new 450psu, and 2more sticks of ram, should i look into ram cooling or stick another fan into the cpu?

[Quantos]

Whenever the power goes off there is usually a surge experienced when the power starts to run through the lines again.  Depending on the surge protector/UPS involved they CAN pass through.  I would suggest taking the PC into a local shop and get them to test the components.