**- Official Asus P5K Thread -**

If I put in an E8500 and the computer powers up(fans spin up) then turns itself off after 2 seconds, no display onscreen, is that becuase the BIOS needs updating to take the E8500? Just got it back from Asus repair and I cant use it, not sure if its the BIOS needing updating or if it is still broke! :/
 
tsinc80697 said:
If I put in an E8500 and the computer powers up(fans spin up) then turns itself off after 2 seconds, no display onscreen, is that becuase the BIOS needs updating to take the E8500? Just got it back from Asus repair and I cant use it, not sure if its the BIOS needing updating or if it is still broke! :/
Click to expand...

I've had that same thing happen to me lots of times before, it can be HSF not placed correctly, wrong overclock, graphic card not correctly fitted.
Have you tried checking if all the power connectors are plugged INTO the board? Maybe you have missed one.
 
I tested all components in an Asus P5N-D, borrowed from a mate and it worked fine, just booted up saying new CPU detected.

Ill try fitting everything again to see if it was my mistake, hopefully it was! Do I need the 24pin + 8pin or 24pin + 4pin connected, does it make any difference?

Also, how do I clear the CMOS properly?

edit:

Installed vista perfectly fine on the P5N-D, shame its the worlds worst board for overclocking, it gets so hot at stock and so unstable even a tiny bit of overclock! Tried all components on the P5K and it just powers on then off :/
 
Last edited:
tsinc80697 said:
If I put in an E8500 and the computer powers up(fans spin up) then turns itself off after 2 seconds, no display onscreen, is that becuase the BIOS needs updating to take the E8500?
Click to expand...
Are you sure that's not the ASUS auto reboot thingie?

Also I've experienced a similar issue to what your describing, that was a few years ago using an ASUS nForce4 motherboard with a new ANTEC PSU, system would power up but then just turn off, really confused te heck out of me. Turns out it was an incompatibility between the PSU (PG signal) and the ASUS motherboard. I used a cheap no-name generic PSU as a temp solution and ANTEC sent me a new PSU which worked fine.

Almost an impossible situation to troubleshoot as the faulty PSU worked fine with other motherboards just not certain ASUS boards.

Luckily I had access to other components to swap about!
 
Thanks, Ill try with another PSU if I can find one powerful enough. Its a toughpower 750w that Im using and it worked fine prior to sending the motherboard off.

What does the auto reboot do? I press power, everything spins up 100% and instead of slowing the fans down and posting BIOS it just turns off, just before the fans spin all the way down the system powers back on and repeat!
 
The auto reboot (or whatever its called) is a kinda safety feature on most modern ASUS motherboards, it should only happen if two conditions are met

  • The board has had memory or voltage settings manually configured
  • The system has just been cold-booted (i.e powered up just after plugging into mains)

If the board is on full auto it should just power right up and boot first time with no auto reboot, from there you can enter BIOS or let the machine boot right up into Windows.

If the board has had some tweaking (i.e manually setting memory timings, adjusting the straps, voltages etc etc) then just after you power up the system will suddenly shut down (for up to a few seconds) then power itself backup allowing you to then either enter BIOS or boot into windows.

On some rare occassions when some awkward settings are entered or you are using some cranky hardware the auto reboot feature can enter an infinite loop, boot, power off, boot, power off, boot power off etc.

I have only seen an ASUS board do this myself once I have tweaked the BIOS to oblivion and the auto reboot feature cannot resolve my settings or make sense of them.

To resolve this crankyness all I needed to do was power down the system using the PSU rocker switch, leave it off for maybe 10 seconds then power up again, at this point the ASUS C.P.R system kicks in and sets fail safe BIOS settings so the system will POST.

Does this sound anything like what is happening to you? If so have you tried powering up the board with maybe one stick of RAM?
 
Well the board was sent back to Asus as a BIOS update borked it, wouldn't boot to BIOS to would just sit on a black screen with all fans spinning until power was turned off.
Got it back, put CPU etc in and it goes the power off then boot infinite loop. Ive tried with 1 stick of ram in, no hard drives upto 4 sticks of ram and a hard drive.

Tried booting up after leaving it overnight, 10seconds, with CMOS battery, without, jumper setting changed to clear the CMOS. Will try and find another PSU now though and hopefully it can power the motherboard and 8800GTS
 
gurusan said:
are you positive the bios on there supports wolfdales? Might need to pop in a 65nm chip to flash to the latest bios.
Click to expand...

Thats exactly what Im trying to figure out :) I think the BIOS they sent back is older than what is needed for 45nm, so I need to get hold of a skt775 CPU to borrow/buy 2nd hand and sell an hour later.
If the CPU isnt supported will it just power on then off then on etc or would it not power on at all?
Local PC shop want £25 to do it for me, so im pretty sure I can buy and sell a 2nd hand CPU for less than a £25 loss.
 
Tried some initial overclocking today, when I am very tired (swing shift + split shift = 2 hours sleep in the last 32 hours).

So tired that I didn't notice that the auto setting for CPU voltage was feeding 1.0V to my C2D 6400, and that was drooping to about 0.95V. Hardly any overclocking at all, usurprisingly :)

So I fed it 1.35V instead, which is drooping to 1.32V. Pretty much stock. Without much fiddling, I just upped the FSB and set memory to 1:1. Then upped the FSB some more and some more. Currently at this:

cpuz.jpg


62% overclock straight off the bat and it isn't even getting hot (Noctua NH-U12F, fan at 1350).

Bah, it couldn't cope with continuous Orthos. I've had to drop to 420 FSB to be stable. It wasn't heat - it's hovering 44/45 on both cores while orthos is running. I should drop the memory divider, to rule that out (it's rated at 400MHz).

Or I could just stop fiddling and play same games instead, but where's the fun in that? :)
 
I’ve not used asus windows based bios flashing tool, but I have to agree with unkle. Just by looking at those details it does seem like you or it is trying to reflash an incorrect image file intended for the premium board.

I swear by ASUS EZ Flash, you can update the BIOS directly from the BIOS setup menu using a USB stick. It’s easy, simple and most importantly low level as it doesn’t run though windows therefore more reliable :)

Windows based bios flashing programs can be real flaky at times, I would only use them as a last resort.
 
Couldn't agree with Hesky more, windows BIOS flash is to be used as a LAST resort. Asus have made it so simple if you have a usb stick, or as I used a usb backup drive. Very straight forward and painless, as long as you've got the right BIOS!! :)
 
You must log in or register to reply here.
Back
Top Bottom