x38 ds5 Q6600 oc to 3GHz suddenly unstable :( - HELP?

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21 Feb 2008
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3
Location
London UK
Hi guys, Im new here. I'm semi-experienced at pc building and recently tried my first oc with the help of a friend.

we managed to get my system happily stable at 3GHz where it stayed for a week or so, temps were all fine in the mid 40s under load. i didn't bother pushing it further as this was more than fine for my needs.

after about a week i turned on the pc and it boot cycled once, then i noticed it had reset the bios settings to standard.

now i can't seem to oc at all... i have even tried underclocking the fsb and it won't work!!

I can't even seem to get the right latency settings on my memory now.

I have tried a few different setups and basic oc's... even trying the sticky post suggestions for oc'ing a Ds4/ds6

the only thing that seems to work is changing voltages, although whats the point if the system doesn't need it on stock right? any changes to frequency seem to cause the system to not post, then reset previous safe settings.

my system:
gygabite x38-ds5 flashed to Bios F5
Q6600 SLACR 95W with Zalman CNPS9500-AT CPU Cooler
Crucial Ballistix Tracer 2GB (2x1GB) 1066
BFG GeForce 8800 GTS OC 512MB
OcUK Ageia PhysX Accelerator
X-Fi Fatal1ty
Thermaltake ToughPower 850W Modular PSU


please... if anyone has any ideas or has experienced anything similar i'd be very grateful for any advice!

Ben
 
I'll give some of those a try cheers... good idea about the memory! In a way i hope it is that. at least i'll know where the problem lies. Will let you know the results.
 
HORAH! Problem solved :D I cannot believe how stupid this was...
As you suggested i tried a few things and it seems it may have been the "USB legacy support"! I unplugged the 500 external HD and turned that off... and now its running nice and stable (so far lol) at 3.2GHz (400fsbx8) allowing me that little extra from my ram too :D

Very happy now. Cannot thank you enough for your help.

... I'll be back on here when the next thing goes wrong or blows up! lol (fingers crossed thats not the case)
 
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