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Disk boot faliure after overclocking e2180

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January 6, 2011 2:47:32 PM

hello,
i am new to this forum and i need help
i have an e2180 @2.0ghz overclocked to 2.6 ghz.
anything above 2.6 ghz leads to a "disk boot failure please insert system disk and press enter"
bios as well doesnt detect hdd as well as dvd drive.i can post at 3.1 ghz and thus the message appears of disk boot failure.
please help me.. i realy want to go above 3 ghz.
those who are wondering if i reset the bios.. it can boot all the drives correctly.
thanks and sorry for bad English
pc specs.
cpu:intel dual core e2180 2.0ghz @2.6 ghz
mobo:gigabyte ga945gcm s2l f8b bios version.
gpu:intel gma 950.
memory: 1 x 2gb ddr2800 kingston
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a b K Overclocking
January 7, 2011 5:01:31 PM

Sounds like it could possibly be a safety mechanisim on the mobo so when you have a majorly unstable OC it wont let you boot to prevent system damage. What are you OC setting in the BIOS
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January 8, 2011 4:54:47 AM

ram voltage-normal
cpu voltage-1.35
ram timings-5-5-5-15
all power saving features disabled.
memory multiplier-2.0 (usually fsb:ram- 1:1)
from these settings it can boot with 2.6 and orthos stable 7 hrs but at 3.0 it posts but error occurs..
thanks for the reply
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January 8, 2011 6:39:08 AM

are those the stock timings ?
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January 8, 2011 7:12:57 AM

yes these are the stock timings...
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January 8, 2011 5:04:55 PM

Look to see if there is some type of option to lock the PCI/PCI-X frequency. I know on some older mobos that as you increased the buss speed they didnt use independent clocks for the PCI/PCI-X busses. This would result in "overclocking" your hard drive connection ( not a good thing, they have very tight tolerances on speed ). Also, check your ram by dropping it down a notch and seeing if the reduced RAM speed helps any.
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January 8, 2011 8:28:01 PM

Yeah since those are stock timings drop the ram frequency eg. 800 to 667Mhz. It is also a possibily you have hit that CPU's limit. 1Ghz OC on a 2 Ghz chip is pretty huge man.
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January 9, 2011 5:38:46 AM

i have dropped ram speeds as mentioned...but nothing worked..
on all ram ratios this errors occurs....
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January 9, 2011 5:42:35 AM

NITROGEnarcosis said:
Look to see if there is some type of option to lock the PCI/PCI-X frequency. I know on some older mobos that as you increased the buss speed they didnt use independent clocks for the PCI/PCI-X busses. This would result in "overclocking" your hard drive connection ( not a good thing, they have very tight tolerances on speed ). Also, check your ram by dropping it down a notch and seeing if the reduced RAM speed helps any.


please can you tell me where i can lock the pci/pci-x frequncy....
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a c 197 K Overclocking
January 9, 2011 12:12:00 PM

CMI,
If manu is running at a 1:1 FSB:RAM ratio, his RAM clock is already pretty low.

manu, look at these two guides:
Core2 Overclocking Guide (generic)
http://www.tomshardware.co.uk/forum/259899-11-core-over...

Shadow's Gigabyte motherboard OC guide:
http://www.tomshardware.co.uk/forum/page-245679_11_0.ht...
It's for an EP35-DS3L but all the Gigabyte Core2 BIOS's are similar even if all motherboards do not have the same settings.

And it is possible that you have reache dthe limits of your CPU chip.
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January 9, 2011 2:51:29 PM

i have read this guide and followed it,but no success.. is there a need of bsel mod for my chip
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January 10, 2011 6:15:22 PM

JSC, I thought he said 2:1, must have misread. I would be lead to think in this case that the CPU has hit its ceiling.
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January 11, 2011 3:40:55 AM

cmi86 said:
JSC, I thought he said 2:1, must have misread. I would be lead to think in this case that the CPU has hit its ceiling.


so that mean i cant overclock it any further :( 
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January 11, 2011 8:22:02 PM

Cant say for sure but it is a good possibility. Give this a read before you give up hope.
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January 12, 2011 12:17:29 PM



it didn't work for me...

i have a question. i have read about bsel mod on many forums and they say you can trick your bios by changing your fsb from 800 to 1066.
because my bios doesnt have any pcie lock and thus after changing my fsb above 260,the pcie value gets above 120.
suggest me if it will work.
thanks
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Best solution

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a b K Overclocking
January 13, 2011 10:01:58 PM


looks like it could work, also looks like a really good way to fry your rig. I wouldnt do it, id buy a new CPU if i was in your position
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January 18, 2011 12:29:03 PM

sorry not for posting for so many days..
i have changed my cpu to Q9650 Core 2 Quad which was compatible with my mobo
works great and thanks to all people especially cmi86 for the long support
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January 18, 2011 12:29:31 PM

Best answer selected by manu 11.
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