Cant get past the first screen???

So I thought I'd be clever and lower the clock speed in the BIOS. I turned it down to 2.15Ghz from 2.8Ghz.

Now I cant get past the first screen on boot...no warnings...nothing???

As soon as I confirmed the new speed (to reduce power consupmtion and heat) the computer shut down and wont even allow me to get back into BIOS!!! Any way to escape???

I'm writing this from the local library.

Please Register or Log in to view the hidden image!

 

Log in or Sign up to hide all adverts.

Did you try tapping the "F8" key when it started up?

 

Log in or Sign up to hide all adverts.

Did you take the battery out and put it back in?
Is there a jumper to reset the BIOS? Too obvious.

 

Log in or Sign up to hide all adverts.

Its a desktop...no battery.
Jumper??? Where?

 

I'll try that when I get home, thanks.

 

If you need to reset the BIOS then look at you mb for the model and check the manual. Most desktop boards have a battery, taking it out and putting it back in may get you into the BIOS screen.

http://www.google.com/search?q=jump...=com.ubuntu:en-US:unofficial&client=firefox-a

 

Good link...I'll study that and try the battery idea. Thanks!

Oh, do I remove/replace the battery while the computers running or off???

 

Off. Take it out and wait a few minutes, same for the jumper. Unplug the power and then press and hold the power button for a few seconds.

I am not sure if all mb's have a reset jumper though. I never change clock speeds either.

Here is another link that may help.

http://www.google.com/search?hl=en&...al&hs=m6M&q=changing clock speeds&btnG=Search

 

Excellent...I'll try the battery idea tonight first, and then the jumper switcharoo.

Report back tomorrow.

Please Register or Log in to view the hidden image!

 

Hehe--- has enough knowhow to underclock the CPU, but has no idea that there's a battery on the motherboard. You would make a great saboteur.



If you aren't getting any POST messages or beeping, you may have killed your motherboard. Hopefully, removing^inserting the battery, or toggling the "clear CMOS" jumper will set it back to its default settings. A lot of boards nowadays detect the CPU and auto-set the relevant settings (IE - BUS speed, voltages and so on). As a safety precaution, the board will become unbootable if the CPU doesn't support the settings.

.....of course, SOME allow you to override those settings so you can nuke your board anyway.

 

I knew where the battery was, but I didnt know where JP14 was at...had to poke a flashlight in there and snoop around.

I finally found the manual...

Please Register or Log in to view the hidden image!

I had to unplug the ATX power terminal, short pins 2 and 3 for a moment and then slide it back on 1 and 2.

Now it works...but I'm still clueless as to how I can underclock without crashing it???

John...you just saved me an expensive trip to the geek stop, thank you!

 

Is this true that MOST CPUs are 'frequency locked'???

"Most CPUs will be frequency locked, unless you bought a special unlocked version. Most BIOS types auto detect the FSB and multiplier options, although some allow a limited control.

Also, regarding the other point , changing your BIOS options to such a state thats its unstable, ie dram timing, could potentially cause it to crash while writing to the hard disk, which in theory could cause windows to fail to load."

 

they are called: CPU multipliers

 

these have unlocked CPU's:

AMD FX-series K8
Intel Extreme Edition
AMD Opteron
AMD Althlon MP
Intel Xeon (?)
Intel Pentium II (pre August 1998)
*all CPU's before the Pentium II*

 

As I read it...it is extremely hard to change the frequency...unless you are totally committed into cracking it.

 

Ah, mines a Pentium 4.
So maybe its frequency locked...hence the crash.

 

its most def. locked.

 

* change FSB: Front Side Bus

,,,

 

Sounds like a quaking bog...I aint walking into that.

 

don't be a chicken.