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GA-K8NSC-939 Gigabyte mobo reboots over and over

post #1 of 9
Thread Starter 
hi guys, im reparairing my friend's PC and his mobo is gonna get thrown out of the window I swear.. his mobo keeps on rebooting at startup so i have a black screen and it reboots every 5 seconds so no way accessing the BIOS. I found some link on the internet such as this one http://64bit.edu.pl/b2166.html but no solution. I tried flashing the BIOS but it won't do anything.. i gotta figure out a way beside taking it back to the shop...
I DID get a clean boot right after i cleaned up the CPU which was badly mounted (damn thing get stuck under the fan.. socket not closed) but after that, i went into the bios to set the time and check the settings and then nothing...

any help would be nice.

his config
GA-K8NSC-939
AMD 64 3200+
1 GB RAM
1 hard drive (IDE) Maxtor 80GB
stock cooling
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post #2 of 9
you could try re setting the cmos, if that doesnt work, i would have thought it would have been ready for the bin
Wingman Fuzzi
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Wingman Fuzzi
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post #3 of 9
Thread Starter 
Quote:
Originally Posted by Fusion Racing
you could try re setting the cmos, if that doesnt work, i would have thought it would have been ready for the bin

weird thing is, i can't find the jumper, i looked all over the board, into the manual etc but couldn't find it !! Who the hell sells a mobo without clear Cmos jumper??

ill try flashing again

thx anyway
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post #4 of 9
Remove the battery, unpluget the power cable from wall and toggle the on/off switch on the PS.
Unrelated to clearig the BIOS... try this, unplug the "Case" ON/Off switch and jump the 2 MB pins it was connected to by taping them with a screwdriver. That will by pass the switch to eliminate it being defective. It's a rare occurnace but one guaranteed to drive someone crazy!
    
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post #5 of 9
From MoBo manual, p 77:

Question 3: How do I clear CMOS?
Answer: If your board has a Clear CMOS jumper, please refer to the Clear CMOS steps in the manual. If your board doesn't have such jumper, you can take off the on-board battery to leak voltage to clear CMOS. Please refer to the steps below:
Steps:
1. Turn off power.
2. Disconnect the power cord from MB.
3. Take out the battery gently and put it aside for about 10 minutes (Or you can use a metal object to connect the positive and negative pins in the battery holder to makethem short for one minute).
4. Re-insert the battery to the battery holder.
5. Connect power cord to MB again and turn on power.
6. Press Del to enter BIOS and load Fail-Safe Defaults(or load Optimized Defaults).
7. Save changes and reboot the system.

And p 27:
17) CLR_CMOS (Clear CMOS)
You may clear the CMOS data to its default values by this jumper. To clear CMOS, temporarily short 1-2 pin. Default doesn't include the "Shunter" to prevent from improper use this jumper.

This MoBo is of the *brilliant* design that it is a 2-pin jumper. In other words, the MoBo boots normally when the jumper is not present (of course, you'll loose it in 5 minutes or so). To clear, put on the jumper. On the picture, you'll see where the two pins are
    
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post #6 of 9
Thread Starter 
all right guys you ROCK, im gonna try that but i couldnt find the damn jumper but thanks to the drawing i finally found the little hidden bastard lol !!

ill reply when its done
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post #7 of 9
Thread Starter 
it did work fine for about 3 reboots then it crashed during the first avast Scan... then it rbooted in loops again i saw that the faulty drivers were installed so im gonna format this and i wont install the faulty drivers as i read on posts.

thx guys
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post #8 of 9
Hehehe.. yeah, whichever idiot made that design.. I mean, I have plenty of jumpers and such in my trusty spare parts baggy (saved from old fried MoBo's and such), but it is more likely to loose that silly jumper. The 3-pin solution with the jumper on the board is much better.

Good luck hope things work out.
    
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E8400 @ 3.8 GHz DFI LANPARTY DK X38-T2R eVGA 8400GS 2GB Mushkin DDR2 800 (single stick) 
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E8400 @ 3.8 GHz DFI LANPARTY DK X38-T2R eVGA 8400GS 2GB Mushkin DDR2 800 (single stick) 
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250GB WD SATA None Windows XP Pro 32-bit HP Pavilion f1703 
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post #9 of 9
I have that board and if you press Del right as it beeps when you first turn it on it will go into a bypass mode where it will jump straight into the bios without applying any non-default bios settings. This is great for overclocking I tell ya.

If you cann't do this your toast.
Then again, how could you update the bios if you can't even get through post?

You've taken the PSU out of the picture right?

And no chozart Im not following you.

I swear 1/2 the threads that sparked my interest tonight (first time being on the site in a few months) you've just so happened to be there. Heh.
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