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P5N-T Deluxe Bios

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November 8, 2010 3:11:23 PM

Hi, I think i killed my motherboard so i need some advice. This is what happened, i wanted to add a bigger frequency to the CPU in the bios, and every time i have done that, it gave me a message : New CPU detected, romsip table is updating.Please don't press the power/reset button!!! .But this time i waited with that message on the screen about 2 minutes and nothing happened, and i was sure it freezed. So i turned off the PC and opened it again, but the system did not post. Do you think there is something i can still do...or it's over with it?

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November 8, 2010 3:36:21 PM

Did you reset the BIOS? Find the battery on the motherboard (little silver disk), and pull it out. Leave it out for about a minute then put it back in. This should reset your BIOS to factory settings. Hopefully your computer will recover.
November 8, 2010 3:40:49 PM

I tried that already...without succes
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a b V Motherboard
a b à CPUs
November 8, 2010 5:36:06 PM

Well then, I'm guessing you need to start replacing components. Depending on exactly which frequency you modified, you could have burned-out any number of components, CPU, memory, PCIe (like onboard ethernet/usb/sata controllers).

I would start with the CPU, borrow one if possible, just to see if your motherboard is still working. Disconnect all your drives, drop down to 1 memory stick, remove any add-on cards. If the board POSTs with another CPU, you fried your processor, get a new one.

If the motherboard isn't working with a different CPU, you could try the memory (1 stick to start with). If a different CPU and memory don't work, I'm guessing its the board. If you really wanted to, you could try swapping-out the GPU, but a bad GPU should give you some beeps or a long beep, do you have a PC-speaker hooked-up?

If its the board, can you still RMA the board to ASUS? It should have a 3-year warranty. I'd tell them you were replacing the CPU instead of telling them you were overclocking it.

edit: One last thing before you start all that, did you unhook the power-supply when you reset the BIOS? Just checking.
a c 156 V Motherboard
a c 172 à CPUs
November 8, 2010 10:12:24 PM

Work through our standard checklist and troubleshooting thread:
http://www.tomshardware.com/forum/261145-31-read-postin...
I mean work through, not just read over it. We spent a lot of time on this. It should find most of the problems.

If not, continue.

I have tested the following beeps patterns on Gigabyte, eVGA, and ECS motherboards. Other BIOS' may be different.

Breadboard - that will help isolate any kind of case problem you might have.
http://www.tomshardware.com/forum/262730-31-breadboardi...

Breadboard with just motherboard, CPU & HSF, case speaker, and PSU. You do have a case speaker installed, right? If not, you really, really need one. If your case or motherboard didn't come with a system speaker, you can buy one here:
http://www.cwc-group.com/casp.html

You can turn on the PC by momentarily shorting the two pins that the case power switch goes to. You should hear a series of long, single beeps indicating memory problems. Silence indicates a problem with (in most likely order) the PSU, motherboard, or CPU.

Remember, at this time, you do not have a graphics card installed so the load on your PSU will be reduced.

If no beeps:
At this point, you can sort of check the PSU. Try to borrow a known good PSU of around 550 - 600 watts. That will power just about any system with a single GPU. If you cannot do that, use a DMM to measure the voltages. Measure between the colored wires and either chassis ground or the black wires. Yellow wires should be 12 volts. Red wires: +5 volts, orange wires: +3.3 volts, blue wire : -12 volts, violet wire: 5 volts always on. Tolerances are +/- 5% except for the -12 volts which is +/- 10%.

The gray wire is really important. It should go from 0 to +5 volts when you turn the PSU on with the case switch. CPU needs this signal to boot.

You can turn on the PSU by completely disconnecting the PSU and using a paperclip or jumper wire to short the green wire to one of the neighboring black wires.
http://www.youtube.com/watch?v=5FWXgQSokF4&feature=yout...

This checks the PSU under no load conditions, so it is not completely reliable. But if it can not pass this, it is dead. Then repeat the checks with the PSU plugged into the computer to put a load on the PSU.

If the system beeps:
If it looks like the PSU is good, install a memory stick. Boot. Beep pattern should change to one long and several short beeps indicating a missing graphics card. Silence or long single beeps indicate a problem with the memory.

Insert the video card and connect any necessary PCIe power connectors. Boot. At this point, the system should POST successfully (a single short beep). Notice that you do not need keyboard, mouse, monitor, or drives to successfully POST.

Now start connecting the rest of the devices starting with the monitor, then keyboard and mouse, then the rest of the devices, testing after each step. It's possible that you can pass the POST with a defective video card. The POST routines can only check the video interface. It cannot check the internal parts of the video card.
January 28, 2011 3:24:06 PM

i had this happen once. look in your manual.the battery reset will not work. you need to manualy reset via the jumper.its in ur manual. i manualy reset using the jumper and then waited a few mins ,put the jumper back in its original place and then walla.it posts again.haha. trust me. it will work. your board and chips are fine.
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