Iffy power button/start-up

Gigabyte / Awrdacpi
December 20, 2009 at 03:27:40
Specs: Microsoft Windows XP Professional, 2.411 GHz / 1023 MB
It takes multiple pushes of my generic pc case's power button to startup XP. 4/5's of the pushes give a blank screen or the system powers down w/in seconds. Once I make the "magic push" everything works fine. I though it was my Power supply. I upgraded to a new 500W supply. Same problem. Is it my power button? My motherboard failing?

See More: Iffy power button/start-up

Report •

December 20, 2009 at 04:16:08
How much did u pay for psu?We need to know the full systems specs(cpu,graphic card,ram,board,psu amps that are in +3.3,+5v,+12v@?A or full of psu name).Yes it could be the power button but let start with psu first.

Report •

December 20, 2009 at 05:25:56
# Model: PSPK500
# UPC: 6 41272 69794 1
* PowerKing 500-Watt 20+4-pin Dual Fan ATX Power Supply
* General Features:
* 500-Watt total output power
* Dual silent fan cooling system
* One (1) 12-inch 20+4-pin ATX power connector
* One (1) 12-inch 4-pin 12V power connector
* Six (6) large Molex 4-pin power connectors
* One (1) small floppy power connector
* Two (2) SATA power connectors
* Short circuit and over voltage protection
* Complies with ATX 12V 2.0 connector
* Power Specifications:
* 115V, 230V switchable power supply
* 50/60 Hz
* +3.3V / 22A
* +5V / 30A
* +12V / 22A
* -12V / 0.5A
* -5V / 0.5A
* +5Vsb / 2.5A

cpu: 2.40 gigahertz Intel Pentium 4
8 kilobyte primary memory cache
512 kilobyte secondary memory cache
Hyper-threaded (2 total)

graphics card: LL-IN-WONDER X800 Series [Display adapter]

ram: 1024 Megabytes Usable Installed Memory
Slot 'A0' has 512 MB
Slot 'A1' is Empty
Slot 'A2' has 512 MB
Slot 'A3' is Empty

board: Board: Gigabyte Technology Co., Ltd. 8IPE1000P 1.x
Bus Clock: 200 megahertz
BIOS: Award Software International, Inc. F4 04/30/2003

Report •

December 20, 2009 at 07:15:13
It's appear u purchase cheap psu 500w +12v@22A, but that is not a problem(i have seen x800xl pcie running in very low psu).if i were u i will pull out(motherboard,cpu + heatsink,one stick of ram,psu,vga card) and test it outside, i will use onboard video first.if the problem still there i will test ram using memtest,if the ram is ok i will test cpu,ram,video card,psu in another system.i suspect the board is bad.

Report •

Related Solutions

December 20, 2009 at 08:16:09
Have you tried testing the on/off switch (the magic button)

Open the case, locate the wires from the front panel switch.
Make sure the connection to the M.B. is good. If so...

Unplug the connector from the mother board. Now using a flat screw driver just touch the two pins. If it starts every time then I would suspect the switch.

Or you can check the switch itself . It's much like a doorbell switch as it only completes a circuit for as long as it is depressed.

Hope this helps

Report •

January 4, 2010 at 02:17:51

I tried your trick. Same result. It seems as-though the longer I keep starting the pc [fans run/no screen display] the more the circuit boards warm-up. Eventually it seems the pc starts normally and then operates fine. My room is very cold [62 deg. F. at times] I'm wondering if low temperature could be causing a component to fail until it warms up?

Report •

January 4, 2010 at 09:49:19

You sound ambivalent about my inexpensive PSU? It's not the cheapest/ it cost 1/2 of other PSU's. My old PSU was in the same price-category. It functions fine after 10-25 button presses and the hard drive boots. Before that only the fans spin/no video.

I'm not able to test components outside the case as you suggest. I have no on-board video.

In my response to worldlibrary I established that the on/off button functions. Something is "telling" the pc to turn off a second-or-two after it starts...until the 25th try-or-such. Is the "warm-up" effect of repowering the circuits likely to affect any specific component first?

You lean toward the motherboard as failing. If so: Why would it function perfectly as long as I leave it powered-up? The same argument would hold for the PSU and the video board -- right?

I'm now logging-off WinXPpro (vs. powering-down) and am able to logon the next day easily. (I used to power-down for 12-18 hrs. and then reboot the next day.)

I'd appreciate help from anyone reading this.

Report •

January 4, 2010 at 18:08:43
Well ....heat does expand and cold contract.

I wonder....what happens when you run it for a few hours...do a complete shut down...and within 10 seconds try to restart.

I too am interested in discovering the cure .


Report •

January 5, 2010 at 03:37:06

It starts-up without a blink after it's been booted and left running awhile. As long as I don't shut down for any length of time [?hours?] it starts back immediately without any glitches.

I removed the DRAM chips and blew the dust out of the sockets and reseated them. I've updated the BIOS to the latest version from Gigabyte [F11]. I've run a hard disk diagnostic from Seagate and the hard drive "passes." I'm hoping to burn a RAM diagnostic CD soon and try testing the RAM...

Report •

January 5, 2010 at 07:55:31
Just thinking...
A computer will start (post) without a hard drive.
With out ram...it will of course beep
No monitor....although you wont see it post. beeping
No cmos battery.

So whats left is the 24 pin and the 4 pin plug and cpu.
Wondering if one of those has a connection that breaks when cold.

Report •

January 8, 2010 at 04:05:46
I removed the CMOS battery, checked it, and it was DEAD! I've replaced it and so-far the pc seems to be working OK. The "VCORE FAILURE" notice has disappeared in my BIOS settings panel.

Thanks for the input folks shared!

Report •

Ask Question