Changing Processor Speed Problem - Computer Crashes on Boot

exorr

Senior member
Jul 22, 2001
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OK, as some of you know, I recently built a new comp (4 or 5 months ago, maybe more, can't remember exactly, heeh). The specs are listed in my sig (The Beast).

I installed everything as defaults, mobo settings, etc etc, and have never had any problems. I run win2k. So after a few months I decide everything all good so i can raise my processor up to its normal speed, which is 1.33 Ghz. Well, first I change the jumper on the mobo to 133 Mhz Bus speed instead of 100 Mhz. Thinking this is what I need to do and this will make it run at 1.33 Ghz. I start it up, screen tells me its running at 1333 Mhz. Happy days!

I get to the win2k login screen, enter my password, hit enter, it begins to load, I get the welcome to windows noise and within 5-10 seconds (it varies, but always happens while programs are still loading) my comp crashes. I get a blue screen, which stay on for a millisecond, so I have no idea what it says, and my comp restarts itself. This happens everytime. So I decide to change the jumper back to default and just raise the bus speed in BIOS, no beans, same problem. The I change it back to 1000 Mhz and it crashes once or twice on boot and then it doesn't have anymore problems, and has been on constantly for the past month.

Anyone know why this would happen? What can I do to get my speed up to 1333 Mhz? I'm getting extremely frustrated. This is the first comp I ever built which is why I left it at default for a few months just to make sure all was going well, etc. Its not even that the speed makes that big a difference, its just that I can't pull out of it what I should be able to.

Any help would be greatly appreciated. Thanks!
 

Pederv

Golden Member
May 13, 2000
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I don't know if you've done this before but:
Reset the bios, with the jumper. Unplug your system before doing it.

Give that a try, if it doesn't work try one memory stick at a time. And since your there verify that the memory is 2100.
 

Pederv

Golden Member
May 13, 2000
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And if the above doesn't work I'd think about getting a new power supply.
 

exorr

Senior member
Jul 22, 2001
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The memory is Crucial PC2100. So its definetly good memory.

What do you mean reset the BIOS? I've flashed the BIOS but have never reset it. I also don't want to reset it because then I'll have to upgrade it again, yada yada.

The power supply could be the problem as its only 300 watts.

Would a faulty power supply cause a computer to crash when the processor speed is raised to 1333 Mhz, but not crash at all when its at 1000 Mhz?

Strangeness. Any other ideas?

edit: Oh, let me also mention that it was doing the same thing before I had 512MB of RAM in it. I tried it before I bought the extra RAM and afterwards.
 

zsouthboy

Platinum Member
Aug 14, 2001
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To reset your bios, look on your motherboard for 3 pins marked "JP1" (that's what it usually is).
They are usually near the cmos battery itself. Take the little piece off the two pins that its already on, and put it on the other pins.
it'll look like this...

JP1
- - .

The - - is the little piece.
Change it to this...

JP1

. - -

Got it? Leave it for at least 10 seconds to completely clear, then replace it like it was.


BTW, resetting your bios won't erase your update to it, it just resets all the setting to default.

It actually sounds like a power supply failure, 350 watts is what you really need. 300 is only recommended up to 1200, so it's probable cause there.

zs

EDIT: forgot to tell him what to do with the three pins :confused:
 

exorr

Senior member
Jul 22, 2001
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zsouthboy,

Yeah I actually knew how to do that, my question wasn't very clearly stated. However you did answer it by saying it wouldn't remove the update but just set everything to default. So thanks!

Oh well, guess I'll look into a new Power Supply soon. Anyone got a nice 350 watt or higher PS for sale? ;)
 

kjmcdonald

Member
Dec 6, 2001
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You've got me confused.

Every Motherboard I've read about/used lately defaults to the right clock/multiplier automatically.
I don't understand how you can say it was at the 'defaults' but it wasn't running at the 'proper'
speed.

If the MB was choosing a slower clock and multiplier by default, then it's possible your CPU
isn't rated for the speed you thought it was.

Then again I could just be wrong too. :)

Yes running a CPU at a higher speed consumes more power, when Posersupplies get near
their limits, the power isn't always as clean or steady. So yes a larger PS could help.

-Kyle
 

exorr

Senior member
Jul 22, 2001
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The processor is an Athlon 1.33 Ghz purchased from Newegg. It is rated for 1333. What I mean by default is that in the mobo manual the default jumper setting is 100 Mhz, I can change the jumper to 133 Mhz, but left it 100 since the mobo said that was the default position for it. As I've said this was my first build so I just did all the defaults as listed in the manual. Glad I did because if I had this problem when I first built it I wouldn't of been happy ;)
 

Pederv

Golden Member
May 13, 2000
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kjmcdonald:
The Epox 8K7A+ is a jumper driven board. It does have an "Auto Select" but that is for the CPU multiplier and doesn't include the FSB setting. The choices for the FSB are 100MHz and 133MHz, there is no "Auto".

EDIT:
Another "fault" of the 8K7A/8K7A+ is the fastest processor you'll be able to run on it is the fastest of the Palomino core. The board doesn't support the lower voltage of the Thoroughbred core.

EDIT AGAIN:
OK, I'm stupid. The 8K7A/8K7A+ may support the voltage of the Thoroughbred. If they can support the old Durons they should have no problems with the Thoroughbred.
 

zsouthboy

Platinum Member
Aug 14, 2001
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Sorry.....didn't want to make you sound like a n00b, exorr :)
Perhaps if anyone else had these problems it would help them, then.


Ummmm....for a 350 watt, check out pricewatch, and see what you can find in an Antec, Sparkle, or <insert brand here>. ;)

zs
 

exorr

Senior member
Jul 22, 2001
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NP zsouthboy!

I'll have to wait until February before looking for a new PS since I don't really have the funds after all the christmas spending! D'oh! :Q
 

dszd0g

Golden Member
Jun 14, 2000
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Are you sure you have adequate cooling?

If your system is overheating it could lock up after a few minutes. Have you watched the temp in the BIOS? Do you have Motherboard Monitor or some such installed that can watch the temperature after it is booted?
 

smp

Diamond Member
Dec 6, 2000
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Don't rule out the ram either. Just because it works fine at 100 doesn't mean it will work fine at 133. Check your temps in the bios or with mobo monitor if you have. My friend is running a 1.33 with a 300 watt antec just fine. I wouldn't suspect the power supply right away. PSU's usually reset the comp, not freeze it, AFAIK of course.