Question about QDI Group QDI PlatiniX 4 Motherboard

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When the PSU is switched on,normally one has to press the on-off switch to power the system up. Now as son as the PSU is switched on,the CPU fan comes on and hard disk indicator light stays on red but with no activity. The screen stays black. This is a system thats been working normally for the past few years. Can anyone give me some suggestions ? I have not got a spare PSU to test. I have unplugged everything except the floppy drive and it is still doing nothing, the CPU fan is spinning but no picture.

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Its the SMPS problem. Change it

Posted on Jan 01, 2011

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Posted on Jan 02, 2017

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1 Answer

Power Supply Dry Run Problem


You need to have the case's power switch plugged into the jumper pin header of the motherboard. Plug in the PSU into the 120 volt mains, enable the PSU via the switch (the one you turned on in the video) and then press the power switch on the computer CASE.
That should do it!

May 29, 2013 | Computers & Internet

1 Answer

HP P4SD, its running good with 4 gb RAM, P4 3.0ghz, and a couple sata hd. The problem is the fan output voltage, i havent been able to read the output chassis and cpu cooler pins voltage cause i can find...


"i can find my dmm?" did you mean CAN'T?
"its clearly off", what is off?
the fans are 3 pins,2 are power, one is RPM tachometer.
"it all works fine", so you can boot and run any OS, ?

"the voltage reads +12vdc", where, at fan or PSU?
the fans run off 12vdc, they are DC motors (from outside fan)
if the fan runs slow at 12vdc the the fan is bad or is a low RPM
fan, as some are, bigger fans run slow, for less noise.!

first is the CPU fan it must run full speed, if not the CPU will overheat in seconds and ALL CPU shut them selves (by there selves) this way. so CPU fan is first. what does it do... there....?

then BIOS screens. GOT BIOS UP? and running? with, ESC key pressed>.
let me guess your symptoms
1: PC dead. will not boot.
2: BIOS dead.
3: all fans DEAD,.
4: power switch works and all PSU voltages read right, (seems not)/?
5: if the PSU power wire reads right(DMM), matching the side sticker voltages, and the CPU is dead, the MOBO is dead, or CPU is toasted.


here is a modern PSU, sticker.
see 5 to 10 power lines, see them. all must read correctly
if a fan is dead, then its dead if 12vdc is present on the fan power pins.




psu-dsqaqngzuibs2svxh2bga4t0-2-0.jpg

Apr 28, 2017 | HP Asus Motherboard P4SD-LA Socket 478...

1 Answer

My cpu power switch a problem


dx2300 Microtower (power shuts off)
only 3 things cause self turn off.
  1. PSU bad or is overloaded, we bench test it or in place test it, ask . its easy jumper to do that.
  2. THE mobo sees gross errors; Like overheated CPU or fans dead. and commands the PSU to off, state. to save it from damage.
  3. and The OS (unstated by you) is corrupted and does a commanded SOFT POWER OFF.
that covers all ways.
that no monitor monitor to me tells me, the VGA GPU chip/card
is failing or you do not have full power to it (DC power)

all that matters is the self turn off cause
remove the HDD , if it still self turns off the proves, #3 is NOT IT.
ever clean this beast?

http://www.pcdied.com/overheated.html
make sure heat sinks not falling off and fans (ALL Of them)
are not packed in lint, my DX has 3 fans, all are tachmeter monitored. PSU fan, CPU fan and a GPU fan (GTX card there)
alway eheck all fans with eyes, not just sound. they most blow.
air.
does the cd eject? if not power is gone. or weak.
power can be good/bad or weak,,(it really is an analog world) for NOISY.
the jumper test is here.
16>17

http://www.pcdied.com/power.html#Jumper

Sep 29, 2017 | HP Compaq dx2300 Microtower - RT950UTABA...

1 Answer

My pc starts normally, but after an hour or two when i click windows shut down windows closes, and no signal message is shown on monitor.But the CPU Fan, GPU Fan & Cabinet Fan running normally,they...


Hi,

There are two harware you should check,


First the memory, it might be malfunctioning, if you have an extra memry card, try to swap it just to test the syatem.


Second will be the power supply unit or PSU, that is already overheating and shutting itself down, thus its not powering the your hard disk. try to replace it if you have an extra PSU.


Those are the most probable problem you have, PSU is the main problem in any desktop that was always been overlooked!


Hope that helps you out!


Thanks for using Fixya!

Dec 16, 2010 | Intel DH55TC Motherboard

1 Answer

Pc not starting from pressing power on. Green LED for SB_PWR is on and when power switch pressed, fan & cool fan flicker momentarily but nothing happens. They do not spin. No LED light appears on front...


> PC had been suddenly powering off several times intermittently for a few days leading up to this state. Does this mean the PSU or Motherboard is at fault?

Yes, either CPU or PSU or motherboard are the likeliest culprits.

It's easier to try a different PSU than to try a different CPU or motherboard.

Nov 18, 2010 | ASUS K8N-E Motherboard

1 Answer

When i shut down windows xp, it goes through all and the hard drive shuts down but the cpu fans and coooler fans keep going, then i cannot switch it back on unless i reach to the back of the computer and...


It seens like a motherboard or power supply problem.

If you have a spare PSU, replace it with the current computers PSU. If you don't have a spare, you can always take one from another computer.

If the problem is still showing up, then the motherboard may be defect and will have to be replaced.

Sep 22, 2010 | MSI K9VGM-V Motherboard

1 Answer

Motherboard shuts down before booting !


You should clarify this a bit more, but please make sure all of your fans are plugged in and the no jumpers are set to over-clock the processor.Also, double check that everything is fundamentally compatible.

Dec 16, 2008 | Computers & Internet

1 Answer

[Emachine C2684] Systems appears to be getting power, but won't boot.


Track down the motherboard manual, the motherboards of branded machines are usually made for them by PCChips or Foxconn or someone similar.
In the manual identify wich connectors on the motherbaord is the front power switch. Disconnect the front power switch and plug it all abck in again to see what happens with the power switch disconnected.
If you feel brave enough you can momentarily short the motherboard powerswitch connectors and the machine will start.
the front power switch is a momentary switch so only short the motherboard pins long enough for the machine to start.

Jul 30, 2008 | E-Machines eMachines Desktop PC

2 Answers

Asrock P4i65G Motherboard


If the CPU is dead the problems can be
  1. no power
  2. no fans etc or
  3. power, no beeps (errors)
If the Ram is not compatible it would be constant beeping.

With the board in, and power supply 20pin + 4pin Pent 4 power attached,(#2 and #7 of motherboard layout) remove power cord from power supply.
CLRCMOS0 allows you to clear the data in CMOS. The data in CMOS includes
system setup information such as system password, date, time, and system
setup parameters. To clear and reset the system parameters to default setup,
please turn off the computer and unplug the power cord from the power
supply. After waiting for 15 seconds, use a jumper cap to short 2 pins on
CLRCMOS0 for 5 seconds. Remove the jumper. Remove heatsink and fan from CPU. disconnect cpu and reseat it. Re-install heatsink and fan. Plug in the power cord. Try to boot up. If it still does not boot and (no power, no fans etc.) problem would then be cpu is fried.



Jun 02, 2008 | Computers & Internet

1 Answer

Not booting


I think it could be one of two things either on off switch is bad or
useing to light of a power source try a 450watt power conductor.
24/4 connector and try replaceing power switch .lala linda

May 31, 2008 | Intel D845GVSR Motherboard

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