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Motherboard boot issues

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isuru003

Technical User
Sep 26, 2012
4
LK
Hey I'm Isuru and have a problem that you might help

I have foxconn mars motherboard, It is 3.5 years old now

It has following problems,

1. Some times PC not power on, mobo led bulb works, but not booting
But after 2/3 days its working normally, Once starts it working completely normally, No over heatings, 45-49 C processor temp, 70-72 C while games playing. (71 C normal in Core2Quad Kentsfield cpu)

2. Some times processor identified wrongly as Core2Due, but after restart it shows correctly as Core2Quad.

3. Computer booting and no display, after 4-5 seconds it is restarting and still no disply and keep restarting. But it is works fine when I re-install the battery,VGA or Ram cards until I turn off the PC. When next day same problem continues. (This problem arise when PC is shutdown around 10-12 hrs, boot completely normally otherwise.)

4. Some times take too much time to pass the POST screen.

What are your ideas, please reply
 
1. Power supply. 2. Any motherboard Capacitors "bulging" at the top.
Check for both of these. If possible, swap the power supply for another one.

Have you tried replacing the BIOS battery (on the motherboard - about the size of a quarter). It only costs a few dollars, and 3 - 4 years is about the life of these. If it is weak, it may take a few "boot" tries to get the BIOS defaults recognized.

Also, what O.S. are you using? I have an old Windows XP box that does this (intermittent booting), and it is because the old hard drive has problems. To boot, half the time I have to hit "reset" to get the O.S. to recognize the Hard drive.
 
I agree with Micker, in that it does sound like a PSU related problem, that is what I am betting on at this stage (though a mainboard defect is not to be ruled out)...

can't really say, until you give us more information as to the systems specs, e.g. PSU Manufacturer, type and wattage, how many drives, RAM size, PC cards installed, etc.

FYI, about the capacitor bulging, you can safely ignore that one, as the Mars mainboard uses SOLID capacitors (not the electrolyte types that bulge and leak)...

Ben
"If it works don't fix it! If it doesn't use a sledgehammer..."
How to ask a question, when posting them to a professional forum.
Only ask questions with yes/no answers if you want "yes" or "no"
 
@micker377

I already tried replacing battery,

I m using windows 7 ultimate 64bit version,
 
@BadBigBen

Intel core2quad 2.4
foxconn mars
2*2GB ddr2
2*250GB sata hard disks
500W PSU (Not popular brand)
windows7

20072011236.jpg
 
I would invest in a new PSU as suggested.

also, reseat your memory and clean out dust, dead spiders and cobwebs :)

ACSS - SME
General Geek



1832163.png
 
Or BORROW a power supply from someone to test if possible. That is cheaper than buying one and finding that it was not the problem.
 
That is a no-name cheap PSU...

and now back to the specs, thanks for the update, but what I am missing are the PC cards (e.g. graphics/video adapter), how many drives (both optical and hard drives)...

and yes, I agree with Goom, if you can borrow a known good working PSU with at least 450W and 20A on the 12V rail, then go do that, if not then consider a purchase towards your next PC,,,

Ben
"If it works don't fix it! If it doesn't use a sledgehammer..."
How to ask a question, when posting them to a professional forum.
Only ask questions with yes/no answers if you want "yes" or "no"
 
What I want to know, is did you replace the motherboard, or the bios chip, since you went over all of this in the a different forum HERE
 
@rclarke250

No Im didn't replace anything Because after that date my PC again worked 100% normally around one year,

Since last week I again experiencing this issues.

@BadBigBen

Sorry I forgot to mention my vga is gigabyte nvidia 9800 GT

One samsung DVD writer but now I removed it,

two sata hard disks each have 250GB
 
No-name power supplies that come from OEMs or with cheap computer cases is trouble waiting to happen.
 
That power supply is way under powered for a Gigabyte nvidia 9800 GT video card . You need a better and beefier power supply. IMO The power supply is the most important component of a PC. I always tend to overpower when I build a PC. It's better to have more power capability than not enough, with a trusted name brand power supply.

Jim

 
Sure sounds like power supply to me. Mine went out recently taking a drive and the MB with it.
 
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