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I want to overlock my cpu dual core 2 7 ghz

Last response: in Overclocking
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September 21, 2010 4:03:13 PM

Hello, hi dears i overclocked my cpu dual core 2.7ghz to 3.5ghz
but after that whenever i start windows 7 or windows xp the blue screen appears after that automaticlly restart while another time i did it again the same thing happens every time i set my cpu ratio to 13.5x please please help me whats the problem please help................
a c 158 à CPUs
a b $ Windows 7
a c 280 K Overclocking
September 21, 2010 8:26:38 PM

Hi redblock6 and welcome to Tom's hardware forum.

That blue screen (BSoD) means that ur OC isn't stable. Try reducing the multiplier and testing the rig with prime95 Linx or OCCT
a b à CPUs
a b $ Windows 7
a b K Overclocking
September 22, 2010 1:04:44 AM

Increase the voltage, but keep it within the manufacturer's limits.
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September 22, 2010 12:11:46 PM

Thanks for the answers.........guys......

My bios version is 02.61
And my motherboard is msi g3tm-p21

when i enter to the bios system there is written cpu ratio at 13.5x
but i cant change it....

but some other said me that turn off the intel eist imean speedstep
but there is no speedstep or intel eist option how can i change it please.......please......help me out
a c 158 à CPUs
a b $ Windows 7
a c 280 K Overclocking
September 22, 2010 1:16:06 PM

Well u can't change it since the Intel multiplier is locked.

In that case u need start to OC with the FBS, start to rise the FBS in little steps but be careful with the RAM speed since this also change when u change the FBS frequency.
September 22, 2010 2:06:21 PM

But how can i unlock it please............. :wahoo: 
a c 158 à CPUs
a b $ Windows 7
a c 280 K Overclocking
September 22, 2010 2:28:20 PM

U can't unlock the multiplier.
September 22, 2010 2:46:31 PM

So thats mean i cant overclock to 3.2,3.1 or to 3.5 ghz :??: 
a c 158 à CPUs
a b $ Windows 7
a c 280 K Overclocking
September 22, 2010 2:58:39 PM

Yeah u can OC the CPU but not with the multiplier since is locked, u need star to OC with the FBS.
September 22, 2010 3:10:06 PM

u need star to OC with the FBS.

I cant understan bro........
a c 158 à CPUs
a b $ Windows 7
a c 280 K Overclocking
September 22, 2010 3:28:46 PM

Ur BIOS should have something that say FBS right?
September 22, 2010 4:05:40 PM

yes bro i got it but when i change my 'FSB' to 230
i mean my cpu ratio is 13.5 and its locked

i mean 13.5x230=3105 and i exit and saved it after restarted

when windows 7 loadings finish suddenly its shown me blue screen and

automatically restart...................
a c 158 à CPUs
a b $ Windows 7
a c 280 K Overclocking
September 22, 2010 4:09:24 PM

That means that the OC isn't stable, a 230 FBS is a little high in the 1st try.

When u change FBS ur RAM speed also change so u need 1st slow down the RAM speed and after that rise the FBS in little steps.
September 22, 2010 4:28:48 PM

In "BIOS SYSTEM" how to slow down the ram...........please :ange: 
a c 158 à CPUs
a b $ Windows 7
a c 280 K Overclocking
September 22, 2010 5:08:59 PM

Look for something that say "DRAM frequency" or "DRAM ratio". What mobo do u have?
September 22, 2010 7:08:16 PM

My motherboard is G31TM-P21
a c 158 à CPUs
a b $ Windows 7
a c 280 K Overclocking
September 22, 2010 7:19:18 PM

Look for the option in the BIOS in advance settings.
September 22, 2010 8:00:47 PM

Yes i found it :) 

There is written.........

FSB/DRAM RATIO AND ITS SET TO AUTO.WHEN I PRESS ENTER ITS SHOW ME SOME OTHER NUMBER LIKE THIS........AUTO
1:1.25
1:1.50
1:1.67
1:1.2.00
1:1.00
1:1.20
a c 158 à CPUs
a b $ Windows 7
a c 280 K Overclocking
September 22, 2010 8:03:20 PM

Nice, so ur RAM is currently running at what speed? 800MHz?
September 22, 2010 8:18:14 PM

Yes bro my ram limit is 800mhz and its set on 800mhz.............
a c 158 à CPUs
a b $ Windows 7
a c 280 K Overclocking
September 22, 2010 8:21:40 PM

Ok, slow down to 667 and start to rise the FBS.
September 22, 2010 8:38:16 PM

Thanks alot bro for helping me thanks alot................now blue screen is not appear again i raised my speed to 3.2mhz

God bless you................ :)  :)  :) 
a c 158 à CPUs
a b $ Windows 7
a c 280 K Overclocking
September 22, 2010 8:50:33 PM

Test the rig with prime95, LinX or OCCT for check the stability of the rig that u can boot in Windows doesn't mean that the rig is stable.
September 23, 2010 10:12:29 AM

linX show me that your prosseser speed is 3.00mhz.....thanx for your Help!!!!!its worked!!!!! :) 
a c 158 à CPUs
a b $ Windows 7
a c 280 K Overclocking
September 23, 2010 1:52:48 PM

Nice, keep rising up to get more ;) 
September 23, 2010 11:27:06 PM

i use OCCT to certify my OC's. i like how u helped him out saint first time OCer not having him use any voltage settings.

glad he got what he was wanting!

hey redblock how is yer new speed treating u man?
!