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Computer will not POST

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p0llenp0ny

Technical User
Jan 21, 2005
9
CA

I've just put together a PC from scratch. Everything was going fine until I set my BIOS settings. Now my system will not POST. I tried resetting the CMOS and still no luck. Have a caused irreparable damage? Here's what I have:

Asus A7N8X deluxe motherboard
AMD Athlon XP 3000+ (333 MHz FSB, 512K cache)
CoolerMaster Aero 7 lite
2 Samsung 512MB PC3200 400MHz
Western Digital 250 GB Caviar
ATI R7000 64MB dual-head video card
Enermax 365W PSU

These are the settings I used:

CPU External Freq. : 166 MHz
CPU Multiplier: 13.0

Please help.


 
You mean instead of letting it auto detect, you supplied values?

You've definitely cleared CMOS & are getting nothing? (is there any power - fans running?)

Have you tried disconnecting everthing except the graphics, RAM, cpu & keyboard?
 

The system auto detected the processor as an Athlon XP 1300 MHz so I set the values myself. It rebooted and it displayed the correct processor (3000+) but then shut down. The next time I rebooted I got nothing.

Cleared the CMOS several times. Followed the procedure in the manual to the letter. Everything else is disconnected. Even tried disconnecting the HD. All fans are running.
 
Hi Pollenpony,

Strange handle. Anyway, i digress.

After building from scratch, computers are very tetchy. The trick is to let them do their own thing and only then do your tweaking. Tweak one at a time only, that way, if something doesn't work you know exacly where to look. i think here, to solve your problem, you need to get back to the defaults. Some motherboards, when pressing the page down on boot, resets the bios. Have a look in your manual. reset the cmos using either the jumper or remove the battery for a few minuets. This should give you a fresh machine.
If you haven't got top the stage of installing the mobo's drivers yet, put your cpu speed to 100MHz. In fact, do this first and you might find it resolves your problem.

Good luck
 
I have already tried resetting the bios. I did let the mobo do its own thing before tweaking. It was posting fine until I put in the correct settings for the processor.
 
If it worked until you put in the "CORRECT" settings then they are not correct for your situation. Check the manual to make sure the parts you have are exactly what the manual says it will work with and the jumpers/options are within limits.Give us a list of all the option choices you have available to you.
 
I checked the processor ID and (AXDA3000DKV4D) and it is indeed an AMD Athlon XP 3000+ 333 FSB. The external frequency for this processor would be 166 right? That and the multiplier was the only settings I changed. (13.0) The jumper settings on the motherboard are correct and set for a 333 FSB processor.

The Samsung part # is K4H560838E-TCCC
 
Have you been able to re-set the bios?
Either thru the bios or moving the jumper and removing the battery on the mobo. I take it you cant get into the bios as it wont post at all, so you have to do it on the mobo, make sure all power is disconnected and the battery and then move the jumper over 1 pin and leave it be about 15 minutes. Then move the jumper back, install battery and power and try it.




Good advice + great people = tek-tips
 
Yeah I tried resetting the mobo. Gave it ample time to do so. I let it sit for about half hour before I moved the pin back and put the battery back in. Still nothing.
 
You could check out the mobo website, some have ways to fix bios.


Good advice + great people = tek-tips
 
It's a new system so anything is up for grabs. The usual t/s applies. Check power/ fans/ cooling/ remove all devices and slowly build it back. Try a spare cpu, different mem You're not getting beep codes, we're usually talking the basic components. Power supply, CPU, Mem or motherboard.
 
I don't have access to spare parts. Looks like my only option is taking it somewhere to get it checked out.
 
'Fraid so... 'bout the only other thing is if you have two mem sticks.. you could drop to one and then the other.
If you have a meter you can check the power supply voltages.
 
I have a feeling it's the processor since my problems started when I changed the CPU settings.
 
That was my thought as well but I didn't want to take a pesamistic approach... there's always a chance something else is causing the problem.
Might as well exhaust the possiblilities first.
 
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