Abit NF7-S and no chance to get in BIOS?

[przero]

Okay, here goes. I built a new rig 2 weeks ago. Had trouble getting it up and running, but finally got it going fine. Abit NF7-S, 512 MB PC2100 Crucial, ATI 64 MB DDR VIVO, 40 GB Maxtor 7200 and new Antec TruPower 430 PSU. Ran 24/7 with SETI@home smooth as silk. This A.M. I decided to add the new CD-RW drive and add new cables and clean up the wiring to improve airflow. Did this , but on power up nothing. The chipset cooler on the MB would spin about 1/3 turn and nothing. I could unplug the power from the PSU and replug it and the fan would do another 1/3. Tried everything. Finally swapped PSU, cleared the CMOS and rebooted. It booted up Win XP. Now however it will not restart. I have to remove the battery, clear the CMOS, unplug power and ATX connector to reboot. Upon posting the Memory/IDE Detection screen does not come up. No way to change BIOS. Tried it all. HELP??????

 

[CraigRT]

usually when that happens, it means it's trying to power on but it doesn't like something thats plugged into it.
last time i had that problem, i had an MSI mobo with a USB header that was plugged in backwards. i simply removed it and all was fine.
try taking out what you just put in... and see if it comes up..if it does.. you need to think of a new plan of action.

 

[przero]

It will run Windows fine when I clear the CMOS, etc. All that was plugged in to the MB was exactly as it was when it ran fine.

 

[KidChaos]

Only thing I can think of is the motherboard is not properly installed in the case.

 

[przero]

Motherboard is running fine right now. It will not show a post screen to allow BIOS cahange at boot up. It is set to default status. 100 MHZ FSB, etc. Motherboard ran fine at 157x11.5 for days!

 

[chizow]

Are you getting a POST "Beep"? On my A7N8X DLX I never see the "option" to enter the BIOS b/c it is masked by the Asus Full Screen Logo or it simply flashes by too fast. I just hit "del" as soon as I hear the POST beep. And as Yield said, make sure you have everything connected to the mobo powered, or correctly connected. I've done this a few times swapping HDDs, had the IDE connected with no power. Most BIOS' and OS don't like that.

Chiz

 

[przero]

Beeps on boot up. If you hit delete immediately or not the BIOS screen does not come up. It goes to the RAID screen, then WIN XP and runs fine.

 

[przero]

If you shut Windows down or restart from Windows, it will not reboot. MUST clear CMOS to reboot.

 

[chizow]

You may need to replace the CMOS battery. Doesn't sound like its saving your BIOS info. Either that or its your BIOS chip. Yank the battery and go to your local CVS or wherever sells watch batteries and replace it. They cost like $2.

Chiz

 

[przero]

Had to flash the BIOS. Fixed . Man that is a quirky chipset/motherboard. Requires a killer power supply just to run.