Asus mobo problem getting graphics card output after oc attempts

[BassPwr]

Asus mobo problem getting graphics card output after oc attempts-

Hi there,

My specs are in my sig, I've been trying out the jumperfree ai overclock options in the bios for my motherboard asus p5n-d. There are various % options you can choose which some of you are familiar with. I was trying to see what setting was most stable but booting with one of the options seemed unstable and usually resulted in a failed boot (nothing on screen but hard drive light constantly lit) rebooting resulted in a post msg saying previous boot had failed enter bios to reset defaults or press f1 to continue. On trying one of these settings, think it was 10% well now I cannot get anything on screen at all. It's like my graphics card wont power up fast enough to show screen output for the post, because when I power on the pc, my graphics card fan starts a few seconds later compared to the rest of the system. Hard drive light stays constantly lit, but no output on screen, rebooting results in the same thing.

I tried doing the reseting cmos to defaults method where you unplug, remove battery, do the jumper and back again, battery back. But no joy, same behaviour

I don't see why attempting the ai overclock feature will have resulted in my graphics card powering on too late.

I don't understand this, I'm not an overclocking expert, I was only testing the option to see what improvement I got in gta4, it did bring a nice improvement when I did try it.

anyone help? is this a sign of permanent mobo damage?

 

[BassPwr]

 

[BassPwr]

Thank you for your responses guys.

Again to be clear, I cannot enter the BIOS because nothing will come on screen, the monitor light stays in standby during the whole post. The monitor knows there's a dvi cable connection still though.

So, I cannot change anything in the bios if I cannot access it.

I tried tapping delete on startup but no joy.

The thing is, the keyboard doesn't seem to function. Caps lock light wont function for example with the power of pc turned on. There is still power to the keyboard and my mouse even with the pc powered off cause the light on my mouse is lit underneath and theres light to the special F key function on my kb. All the fans start up on the pc, graphics card fan seems a tiny bit later than the rest, can't remember if this is normal behaviour or not.

I did not use the asus software on the desktop to try the ai overclock functions, I did it directly through the bios. I did get it working, but most of the time it was unstable and failed to go through. This sounds weird but I had disabled speedstep, C1 I think too. But CPU-Z and realtemp would not display the higher cpu speed, the only way I saw it was by loading up the windows xp system box which lists your cpu speed and other details. I also saw it at the start during post.

This motherboard claims to have C.P.R. (CPU Parameter Recall) which allows automatic resetting of the bios default settings in case the system hangs because of overclocking. This eliminates the need to clear rtc data by removing battery/jumper. Simply shut down and reboot the system and default settings will return for CPU. Obviously this automatic rescue system isn't working.

There's also crashfree bios 2 which allows you to restore original bios data from the support cd wen bios codes and data are corrupted, this protection eliminates the need to buy a replacement rom chip. I don't think I can use this if I cannot even get anything on screen - so impossible to boot from the CD.

I really don't know what to do guys, this is my main pc that has stopped working, I wish I never bothered to try asus feature and did it manually instead.

I thought about buying a cheap 8400GS to see if it's my graphics card, but I don't see why my graphics card would suddenly be faulty, the fan starts up on it still.

Can anyone help pinpoint the fault? is it the bios chip which has become corrupt? stopping graphics card output and normal post? The hard drive light stays constantly lit, I don't understand this, it's not like there's lots of hard drive activity.

 

[BassPwr]

it is a ps2 kb.

 

[BassPwr]

thanks, I just tried vga cable to dvi adapter, no joy.

have tried powering off and on a lot, still no joy

I sourced the fact the hard drive activity light staying lit was because of my dvd rom drive being connected/powered. With or without a disc in the drive.

 

[BassPwr]

Thanks for your advice.

I just had the battery removed and the jumper on clear for 1 hour, also tried your method, screen is not getting any output still but the system is running - so same as before, grrr.

Also like to add the battery is healthy, reports green in a battery tester.

 

[BassPwr]

I have my eyes on a cheap Nvidia 8400GS pci-e so I can rule out the graphics card, any idea if vram makes any difference to using it as a possible physx card in future? you can get a 256mb or 512mb version of the 8400GS.

I could rule out the graphics card by building a pc out of my old msi mobo which is pci-e, have an amd cpu i can fit to it.

 

[BassPwr]

ok, done some testing.

It's not the psu, it's not the graphics card, and it's not the ram.

So it has to be the cpu or the motherboard.

I had read about my cpu being fine for ocing up to 4ghz, so I thought a little oc would be fine. I think the ai overclock options were 5%, 10%, 15% and 20% .. I chose 20% first which resulted in a blue screen during boot. 15% got me to windows but resulted in gta4 crashing to desktop. 10% i think was stable. I know you're supposed to start small and work your way up. I have to add each time I made a change in % it didn't seem to go through properly the first time. Resulting in the no post effect, rebooting brought me back to post on screen. But now I'm stuck with the no post effect with no correction by the motherboard.

I made an error when doing these overclocks, the multiplier was left at x6 when it should be set at x9 for the overclock on cpu speed to function correctly, now explains my strange speeds as reported by cpu z.

I don't believe my cpu has fried because of this, it must be the motherboard bios chip at fault? corrupt? unable to correct itself?

can I rma it to get it repaired/replaced?

I'm never touching asus auto oc settings again, manual is the way to go

In the manual for the p5n-d it says to disconnect power cable, take out the battery, move the jumper to 2-3 for a few seconds and put back, put back battery, power cable back on, and it should have cleared the bios settings.

I have read that sometimes it can take a lot longer to clear it, so I'm going to try about 12 hours to make sure. If there's no joy after that, time to return it I think for repair/replacement.

 

[BassPwr]

after 8 or so hours with the battery out and jumper set, still no screen output/post screen.

95thrifles, the fact the other msi system starts up fine points to the graphics card being ok. I did try another psu on that system, and also the same psu on my asus system which results in same behaviour of no screen output. To be sure I tried the hiper psu on the msi setup too and it started fine. I have 4 sticks of geil ram to test with, it's not the ram. The mobo bios must be corrupted somehow on the asus due to repeated reboots during ai overclock attempts.

Gunda, thanks for your guide. I believe I already tried that method, but tried it again.. still no screen output/post screen. The monitor just stays in standby mode - the lights are on but nobody is home.

last thing I will try is trying to power it up outside the case.

Do you think asus will refuse to repair/replace and will find out what is wrong because of attempted ai overclock? i cant really afford to buy another mobo, can't believe this ****.

 

[BassPwr]

Well the motherboard isn't totally dead, as has been said it still powers on and runs kind of. So I think it must be a problem with the bios chip.

I've posted on the support forum for my motherboard and sent asus a technical support note to see what they say.

I've only had the mobo since may 2008. Not with overclockers, but another popular online store. Not sure if I will be sending it to the store or asus.