is it my mobo or PSU that is faulty?

Bahney

Bahney

Bahney

Associate
Joined
22 May 2006
Posts
23
i just bought myself a new pc, put it all together no probs and it worked first time Hurrah! i thought

managed to get windows installed ok and everything was funning fine, i have shut down the pc and now it wont start back up again!

i unplugged the powrer cord flicked the i/o switch a few times and nothing, my mobo has a standby led on it which just flashes.

after leaving it 30min or so...i had to i was getting fustrated!

i went back and noticed the standby led was solid amber and not flashing...odd i thought and pushed the power cable and hey presto worked!

i then had to shut it down again and you guessed it...no power! just a flashing LED, pc is 2 days old.

psu = seasonic s12 500W
Mobo = Lan party NF4 ultra-D

i have checked all the power connectors on the board and they are all in solid, there appears ot be nothing really wrong with it.

any ideas ?
 
ok with a process of trial and error of unplugging and re plugging in things and testing i have discovered something very strange!

if i unplug one of my ram strips the standby light goes solid stright away when i turn it on and hey presto my pc boots up!

i have tested both pieces of ram and all 4 ports none of the ports are faulty and neither piece of ram is faulty! but when i have both in the pc it now will not start up???

i have a feeling my psu is not powerful enough, i have unplugged my hard drives and dvd-rw etc and left both pieces of ram installed but still no joy, if i have just my mobo/gfx card plugged in it still wont work until i remove one piece of ram,

here is my full spec

hitatchi deskstar 250gb X2 useing the Sata power cables
athlon 64 4400
mushkin 2gb em3200 (2X1gb)
connect 3D radeon X1900 Xt 512mb
seasonic s12 500W silent atx2.0 (ca-001-ss)
dfi lanparty UT NF4 ultra-d (mb-014-df)
zalman s7000

its all a bit bizare!
 
i have plugged in the long 20pin power connector, there is a small 4 pin connector next to it and there is a molex type connector and a floppy drive type power connector on the mobo, i have plugged all these in

if i remove one piece of ram it boots up into windows but beeps twice before post, i have checked the mobo manual but there is no beep guide!

any more ideas? i am useing the power switch on the mobo itself while i am trying to fix this.

how strange is this problem? lol
 
right then, i have put in some ram out of my old pc and hey presto everything works perfectly, starts up etc and everything is perfect.

so i will have to call ocuk on tues and arrange to send this ram back for a replacement Doh!
 
it is defenatly the ram that is at fault.

before i call ocuk tomorow and arrange for it to be sent back could someone please confirm that the psu i have will be able to power my rig ? it isnt just a lack of power? i have removed devices such as hard drives and cd-roms etc and still no joy so i am 99% sure it is faulty ram but i still have that thought in my head that when i have this ram in the pc it may be under powered.

i just dont want to send it back for a replacement and have the replacement be faulty as well, lol
 
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