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Cpu upgrade

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May 12, 2009 4:51:59 AM

I have the p5n-e sli with a 2.33 GHZ core 2 duo cpu.I installed the E8400 3 GHZ and it would not boot, message said something about the cmos.I fallowed the instructions on flashing the cmos and the pc sees 3 GHZ on boot but will not boot. could use help getting the 3gig cpu working on this mobo

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a b à CPUs
May 12, 2009 6:30:08 AM

It's possible your new processor requires more power than your power supply can provide? What is your current PSU?
May 12, 2009 6:45:29 AM

Is your BIOS updated? The e8400 wasn't even around when your motherboard was originally built, if you haven't updated, your motherboard won't properly support the CPU.

Go here http://support.asus.com/download/download.aspx?SLanguage=en-us and fill in the blanks, select your OS, and then look over the BIOS updates. There's one for that mobo dated 4/28/2009, so odds are you don't have the most up-to-date version on your system.
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May 12, 2009 6:45:40 AM

could be the psu..
a b à CPUs
May 12, 2009 2:49:05 PM

^
I'd check the BIOS first. I would think it would at least boot to the OS. The PSU tends to crap out on high loads.
May 14, 2009 4:01:18 PM

I hope not the power I had just installed a 750watt unit.as for the bios should I use the windows update or the dos as instructed in my manual,I dont have a floppy drive for the dos update
May 14, 2009 4:08:18 PM

you don't need a floppy drive to update your bios. follow the instructions. it is very easy
!