ECS mobo MCP68M-M2 v 1.OA new PSU won't boot

Apply new turmal compound to your cpu and try to start again

a HP z800 Desk top., full sized too.
what options? what does it have inside, now. ok 1 VGA card now. but is there a CD/DVD or BR disk drive there? options?
running SSD ! good.
its sold with a wide range for RAID drives, options.
and dual Quad-Core Intel Xeon Processor 5500 Series.

7 huge drive bays,
ever think to boot to a Linux CD? LIVE (no HDD need be there)
or windows 7,8,10 LIVE PE windows disk. (no HDD need be there)

my guess is if that fails (above simple test), then the PSU is bad.
it turns off for only these reasons.
1: the OS told it to.
2: the PSU saw errors and turned it self off.
the cause list is huge. (even bad MOBO, bad ram, or anything plugged into that MOBO that is shorted.

The PSU if it sees faults on any of its many power bus lines
it shuts off as after 1full second of trying to get it right (ATX spec)

why not just strip it down to only
mobo,PSU, no vga? , 1 mem stick.
see if fans run, powered on and it holds, there.
have as little plugged in to MOBO is possble
see if you get beep codes or , plug in 1 USB keyboard
and see if the LED there have flash codes.

ever seen a live boot CD? or stick
today all techs, have a boot stick, i have 4,
that why we can test everything out, with no HDD present.
see the POWER OF THAT?

I take a LIVE PE or linux, ISO file and burn a USB stick with RuFUS.
then boot to it, keep it in the tool box. and be empowered.


The PSU when working, some dont shuts off for 2 reasons
Power bus overloads, over/under voltage tests, or the soft power off
bit is TRIPPED.
if no HDD present there will no soft power off , possible. dig?
you push the power button and the PSU must stay up
do the fans go off too, ? you never mentioned FANS.
mine has 4 fans,
if the fans good off, now HDD then the PSU is bad or just UNHAPPY.

unhappy means, OVELOADED.

The more fancy the PSU, the more possible ways to overload
they do that to keep from blowing to kingdom come, $500 set of
processors. (a good thing)?

one more hint, the PSU has this one wire.
called PWR-OK if the PWR-oK goes false, the PSU
shuts off.
learn how this works and all else is easy.

No. Maybe your pc will run one to two deges higher temperature

what tower? model, the monitor has nothing to do with power and dead fans in the tower.
'Sounds, (and silent to) means the PLUS in the PC is dead.
all things can be repaired, that is what technicians do.
here is the chain of events, ! to get noise (fans)
power in the wall 120vac , usa
power to the PSU,
the power button goes to the MOBO, and standby power is there
now and pushing said button the MOBO commands the PSU on
if the PSU is happy (PWROK) thinks PSU IS safe the PSU tells the PC its ok, and power stays up.
and fans run.

so my guess bad PSU, its easy to test with anyf $10 voltmeter,
ask.

tower PSU, 101

http://pcdied.com/power.html

do you try a second monitor and was the monitor turn on? some times we do forget jim check power cord to monitor as well ok.

In this order:
check PSU is working ( fans run in the psu), test with another psu installed,
See of there is a green LED lit on the mobo
Check capacitors are not bulging or leaking and there are no signs of burned circuit traces on mobo
remove ram and try booting see if you get power to the cpu fan
try bypassing the PW switch and touching the PW terminals on the fpanel header to eliminate swith problem.

If that fails, suspect dead mobo

Have you tried a different power cord? (longshot, I know, but it is one of the variables that you don't mention)

Have you tried a different A/C outlet?

I suggest replacing the fans with new fans. Fans do expire and they need to be replaced.

Hi,
try taking 1 stick of ram off the motherboard, and boot up with 1 stick in slot 1 or 2.
You should get some beeps, 1 is system Ok.
3 is usually RAM/Graphics problems.
Also try booting with the motherboard setup disk in the CD Drive, it may be looking for files to initialise the Board.
And the obvious, check that all cabling is correct from mainboard to front panel. Power on/off Reset et,c.
View the user manual to see if the board has any jumper/dip switch settings for different configurations.

Mike @ compurepair.

remove the rct battery and try again power on again.
Also look for and replace bad cappacitors. If nothing works, you need a new momo!.