First time builder really need help.
My pc crashes every time I changed the multiplier in the bios. Any advice is greatly appreciated
cpu temps never goes above 35c, so I don't think overheating is problem. please help....

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AMD's Athlon 64 X2 5000+ Black Edition
abit Fatal1ty AN9 32X NVIDIA nForce 590 SLI ATX AMD Motherboard Retail
COOLER MASTER Hyper TX2 CPU Cooler
PNY VCG86512GXPB-OC GeForce 8600GT 512MB 128-bit GDDR3 PCI Express x16 HDCP Ready SLI Supported
Patriot Extreme Performance 2GB (2 x 1GB) DDR2-800 CL 4-4-4-12 EPP, SLI 4gb (3gb with XP)
Seagate Barracuda 7200.10 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s Hard Drive
SAMSUNG 20X DVD±R DVD Burner Black SATA Model SH-S203B
Aluminus ATX Full-Tower Case - Black
X-Finity™ 600 Watt PSU

Which muliplier did you change? You raised the FSB?

What is X-Finity? First off, I'd recommend choosing a PSU from this list: http://www.tomswiki.com/page/Tiere [...] ngs?t=anon (preferably tier 1 or 2)

Now, I think people need a little more information

Did you increase the Vcore voltage at all? What is your RAM clocked at? What do you mean by "crashing"? (Does it not boot up, crash after Windows loads, etc) The crash could be due to inconsistent power being fed to the CPU, but I my self am still new to OC'ing, so I'll let you answer those questions and have the experts help you.

thanks for all those replies,
X-Finity™ 600 Watt PSU
http://www.ultraproducts.com/produ [...] ductID=387
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No, all I could do is increased the the cpu muliplier to 14.0 and my system crashed before it could load window.
I did not have a chance to play with the FSB or raising the core voltage. All other hardware stayed at default.

It would help alot if you read the guide on how to overclock a Athlon CPU at the top of the overclocking forum.

thank you cfvh600 for the suggestion, but according to AMD's Athlon 64 X2 5000+ Black Edition review,
http://www.tomshardware.com/2007/1 [...] erclocker/
I should not need to touch the FSB, and that is what A newbie’s guide to Overclocking an Athlon XP CPU suggesting me to do.

I'm not familiar with that board. What I'd do is start over, clear cmos, set up bios. The minimum change would be the cpu multiplier x13 to like x15 ( x 200 = 3ghz). If that doesn't work, you'll need to read a guide.

My 5000+ is running at 2.8GHz, 200X14, @ 25C. I didn't touch the voltage. This is the speed it defaulted to when I installed it last night. Quite surprising, but I'm not complaining. I haven't tried OCing it yet. But temperature-wise, it looks like I have a lot of room to play.

This is just a theory. But it sounds like your bios not be up to date. Bios still thinks it's a locked multi maybe. Try to re-flash it with the latest revision.

And you are correct about raising the multiplyer. By doing this you are only OCing the CPU. This is the whole reason behind the Black Edtion. It can be fine tuned later by adjusting the HTT frequency.

updating the bios is one the first thing I did after installing the OS. With Abit One Click BIOS Update elimnate human error.

Are you certain it's the black edition? Right box, wrong part possibly?

And compounds Microsoft Errors...

Hahahah....I forgotten what I've wanted to post because I read your post