Computer wont start after bios changes

July 20, 2009 at 23:22:55
Specs: Vista
Ok, so, me being the curious idiot i am, got bored and restarted my computer, n went into bios, the first panel was ExtremeTweaker, and i went down and increased my cpu frequency from 200 to 400, the max was 600. then i put cpu multiplication on 5 or 6x, cant remember exactly. Now when i try and boot it up, i get nothing but the lights and fans on the tower. The monitor does absolutely NOTHING, and nor does my mouse. (it lights up). I know i shouldnt have been messin with things i dnt know about (lol) but i was wonderin if there was anything i could do at home. I really dont want to have to take it to a repair shop.


CyberPower PC
AMD Athlon(tm) 64 X2 Dual Core Processor 6400+ (2 CPUs), ~3.2GHz
2046MB RAM
Hard Drive:
500 GB
Video Card:
NVIDIA GeForce 9600 GT
Generic PnP Monitor
Sound Card:
Speakers (SB X-Fi Xtreme Audio)
Logitech 5.1 Subwoofer System
USB Root Hub
USB Root Hub
Mouse Surface:
Operating System:
Windows Vistaâ„¢ Ultimate (6.0, Build 6001) Service Pack 1 (6001.longhorn_rtm.080118-1840)

Had nowhere else to get my specs from other than my xfire profile.

thanks to anyone who will help

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July 21, 2009 at 04:47:10
Easiest thing to try is to unplug the mains, open the case & either find the 'clear CMOS' jumper, or remove the small cell battery from the motherboard for a few minutes - this should reset the BIOS to its default values.

"I've always been mad, I know I've been mad, like the most of us..."

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July 21, 2009 at 05:32:42
"I know i shouldnt have been messin with things i dnt know about"

Exactly right! You obviously never overclocked an AMD system before because you did it 100% wrong.

There are numerous settings that have to be can't just double the CPU frequency & expect the system is gonna boot up afterwards, even if you did lower the CPU multiplier. Whenever you change the CPU frequency, it causes a chain reaction of overclocking...RAM, motherboard chipset, PCI-express, etc. You have to change all the other settings to compensate for the increased CPU frequency or the system becomes unbootable (as you found out).

You have to lower the RAM speed, lower the HT multiplier, lock the PCIe at 100MHz, disable Cool 'n' Quiet, disable all Spread Spectrum settings, etc. And you have to realize that there is no FSB so if you change the CPU clock setting from say 16 x 200MHz to 8 x 400MHz, thinking that doubling the CPU frquency will increase the preformance, you are will have gained absolutely nothing. Also, you should ALWAYS increase the CPU frequency in small increments of say, 10MHz at a time...NEVER in one huge jump! Basically, you broke every rule in the book.

Do as instructed by johnr above...unplug the power cord, then use the clear CMOS jumper to reset the BIOS to it's defaults. If you're unsure how to do it, check the motherboard manual. Then study up on how to properly overclock an AMD system before you end up doing something that you can't recover from.

Where's the make/model of your motherboard on your list? Since it's a CyberPower system, you *should* have some sort of spec sheet. If you can tell me which board you have, I can walk you thru how to overclock it the right way.

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July 21, 2009 at 06:55:15
Thanks guys, i cant find the CMOS jumper, but i tried to take out the battery, but its as if its glued in place. I've taken it out before to replace it, no probs. Just cant get it out this time.

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Related Solutions

July 21, 2009 at 08:29:46
You don't know the make/model of your motherboard?

There has to be a Clear CMOS jumper & it's generally somewhere near the battery. ALWAYS unplug the power cord 1st, then move the jumper from the normal position to the clear position, wait a few seconds, then move it back again...that's all there is to it.

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July 21, 2009 at 09:16:59
Ok, i know that the make is ASUS off hand, but i dont remember the exact model, and i cant find the printout sheet. i took some pics of the area around the battery, and one of what i think might be the jumper.
That it? ^^

Just wanna be sure before i start pullin plugs.

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July 21, 2009 at 11:11:25
C'mon dude, it ain't rocket science! Look at pic #1...see the switch right next to the battery that's labeled "CLR_SW"? Slide the switch to "disabled", count to 5, then slide it back to "enabled" again. Plug in the power cord, boot up, then immediately access the BIOS & correct all the settings again.

It certainly would help to have the manual. ASUS is usually pretty good about labeling their products. Look for a model number on the board.

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July 21, 2009 at 11:27:41
Actually, believe it or not, but this stuff doesnt come as easy to some people as it does to, say, you. I managed to get the battery out, and put it back in. Now im happy to say im replying to this from the PC that was messed in the first place. Thanks for all the help! :P

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