Windows Protection Error

[wygram]

I have a classic Athlon 750 running on a KA7-100 when I bump it to 120 FSB and 1.70v it crashes after a few minutes. When I put the voltage to 1.75 it won't POST until I turn it on and off 2~3 times, then windows gives me a Windows Protection Error, when I put the I/O voltage at 3.4 from 3.3 the POSTing problem disappears but the Protection Error remains. If anyone has any ideas or has had this problem and has solved it please help.

[AZZKICKER]

TURN UP THE VOLTAGE

[Gerry]

I don't have the stats on hand, but what does upping the FSB do to the Cache speed? Isn't the cache on the old Athlons limited to around 350 MHz, thus the need to run it at some fraction (1/2, 2/3, etc) of the CPU speed? Some research in this area might help, unless, of course, you've already considered this. In that case, ignore me and I'll go away.

Good luck

PS: I found this at www.tomshardware.com/. cpu/99q4/991113/athlon_overclock-03.html . It's a little old, and not exactly what I was looking for, but it's a start:

((Quoted))

The Second Level Cache Divider

On the web is a lot hoopla going on about Athlon's L2-cache divider. The Athlons that are currently available are all using a divider of 2, which means that Athlon's L2-cache is running at half the core-clock. Upcoming models that run at 750+ MHz will use dividers of 2.5 and 3 until AMD has integrated Athlon's L2-cache on the die. There's several websites that tell you to change the SMD-resistors on Athlon's PCB to change the L2-cache divider. Tom's Hardware knows that this is not necessary. The L2-cache divider can actually be changed via a software setting. It's usually the BIOS of the Athlon-motherboards that sets the divider and the BIOS is designed that it automatically changes the divider for higher clock-frequencies of Athlon. Thus you normally don't need to mess around with those settings when you plug an Athlon overclocked to 800 MHz into your board, the divider will automatically be changed by the BIOS.

Unfortunately we don't know the software settings for the L2-cache divider yet, but we are working on it. Until then, I'd still like to advice against messing around on the PCB unless you really feel that you have to.

[wygram]

I tried playing with the cache divisior it didn't help, I still can't get Windows to boot unless I'm running a core voltage of <=1.70 anything higher and I get a Windows Protection Error

[Napalm]

My Athlon classic 750 (not overclocked) used to give me a windows protection error while booting win98 (have switched to win2k now), it would to it occasionally after installing new programs and rebooting, if I booted into safemode and then restarted, it usually went away...it could be that certain components don't like that FSB speed, so when windows tries to access them during startup the don't work right

[wygram]

But it's not the FSB that windows doesn't like, it's the voltage if it's lower or equal to 1.7v then everything is fine but the cpu needs more power than 1.7v to run at 900 but windows won't boot with anything above 1.7

[BK]

My duron now gives me the same problem once in a while, I say now because it started after i added some new components, if i set the clock speed to high.