Help! My ABIT suddenly stop working, CPU fan Start and STOP

[Peter007]

I have a very reliable ABIT Bx6-rev2 Motherboard.

Everything was working fine till I removed my Processor (Celeron 700-1050mhz OC) and replace it with another
Celeron to verify if it is dead. Afterward I pop back in my CPU and now the Motherboard won't BOOT.

I notice the Current does carries through the Motherboard. Basically when I HIt the START-Button.
I see my CPU Fan start, the quickly shuts off. PS-2 Keyboard does briefly light up upon hittin the Start-button,
which also indicates the power is carrying through the Motherboard.

Natureally, I assumed it is the PowerSupply, however, to my dismay. I try 3 different "Working" PowerSupply,
each one is doing exactly the same "CPU Fan start/stop deal".

My 2nd solution was to Remove Everthing: (all power connector to CDR, floppy, and all PCI/ISA devices).
still no boot.

3rd. Soluiotn was to take out the Battery, unplug the ATX Motherboard, and leave it for a week to discharged.
__________
Well that solution kind of work and kind of doesn't!

After 1 week of discharging, I place the CPU back in and to my BIG SURPRISE, it booted fine!
However, after 5 minutes, it won't boot again.
Now it is as Dead as a ?xxxx

Any Idea?

 

[Buz2b]

Sorry, but to me, ABIT and "reliable" don't go together. I'm betting that it's the board but there are a couple of things you can do/try. First, remove your CPU and HSF. Clean the thermal paste from the CPU and then reinstall with new paste. You need to be very meticulous when doing this and take your time. It could be that something was just not right with the installation before. It happens and those are the symptoms of a failed cpu or cpu/HSF installation. You might also want to pull and reinstall your RAM (just use one stick). Also make sure the HSF is plugged into the proper header on the MB. Some of the older boards wouldn't boot if they didn't "sense" a fan on the CPU fan header. If those don't work, then as a last resort you should remove the board from the case and try to boot it on an anti-static surface/bag/etc. Only with just the video card, cpu w/hsf, one stick of RAM and maybe a floppy drive; nothing else. Not hard to do but kind of a pain. Also, just for giggles, did you change any jumpers when swapping out your CPU's? Maybe need to go back over them if applicable. Good luck.

 

[CaptnKirk]

Some fans don not have the circuit that reports back to the BIOS that the fan is running.
BIOS reads this as a fan failure. Reset in the BIOS to DISABLE the 'Shut Down if Fan Fails'
should work again.

 

[Pardus]

Sorry, but to me, ABIT and "reliable" don't go together

I disagree with that, the BE6-2 is the most reliable celeron board to date, there P4 boards have some problem with the capacitor being too close, never had one of those, but the BE6-2 is a great solid mb.

To answer Peter007, did you check the motherboard jumpers, on page 2-19 of your manual, it shows you need to set dip switches based on cpu frequency. There is also the possibility you inserted the new cpu incorrectly or bent a pin on it, both of which would make the board not bootable.

All else fails call abit, there support is good.

 

[Peter007]

Thanks for some reply, but ABIT BX6-Rev2 DO NOT HAVE "ANY JUMPER"!
Abit started to implement a jumper switch with the introduction of BE6 and BF6, the older one are COMPLETELY JUPER-LESS


It is not the CPU and the ThermoPaste, I have remove my Celeron, pop back in the original Celeron 300a Slot-1, still no boots,
I then try the Pentium II-300mhz, and same thing. These CPU are all working in my second PC of ABIT BH6. So apparenlty the problem
has nothing to do with the CPU nor the Jumper.

I'm still @ lost for Clue??? I've remember reading some other people have this kind of "Star/Stop" problem, so I can't be along.

A friend of mine suggest that there is a SHELL-LIFE to Motherboard - (TRUE???)
and that my ABIT BX6-rev2 is 3 and the 1/2 years old, and has gone through no less than 6 processor upgrade.
He thinks that the CPU Contact is wearing out, any truth to this idea?

 

[CaptnKirk]

Sometimes if the computer just starts to run then shuts down after 2 - seconds, you can start pushing the 'On-Switch' about every 2-3 seconds, and get it to stay on long enough to post up to the BIOS. Once again - if you can examine the BIOS see where the setting are in the PC HEALTH
and see if there is something enabled that can be turned off. I had the same issue with a PANAFLO CPU fan, and had to work around it until I resolved what could be left on.

The only Jumper I have is the CLEAR BIOS or RUN pinning

 

[Peter007]

Interesting, but unfornately I have no "PC-HEALTH" menu under my Bio

 

[Buz2b]

Look, I think your friend that suggested that the CPU contacts are "worn out" is a bit off base. You wouldn't wear out a contact like that with a few cpu changes (or even 6-7). However, the part about a limited lifespan holds a bit of truth to it. The longer a system is in use and in a warm, closed in enviorment, it can effect the pcb a bit; causing it to be a bit less "forgiving" when flexing or moving it about. It's like it becomes "brittle", for lack of a better term. This can cause some of the tiny traces be comprimised. It is not an exact science but it can happen. At least this is how it was described to me a couple of times. I'm not saying that this is the case with yours, but it is a possibility. Did you try pulling the MB out of the case and booting it there? That would be the most logical step in your troubleshooting and should be done.

 

[savior]

I had this problem a few years ago. The cause was my mobo being grounded to the case incorrectly. I took the mobo out and the system ran fine. I'd go with Buz2b's suggestion and try that. I pedrsonally ended up jury rigging something inbetween the mobo and the case. Everything worked fine, but it defintely was a college guy on a budget typ eof solution. Good luck

 

[lobadobadingdong]

Have you tried booting with the cmos battery out of the board? If it somehow got internally shorted it would cause the problems you described, I had this happen to me on a Shuttle av61. Shuttle even shipped me a replacement bios to try(didn't work obviosly), because that's what their tech guru's thought it was, may be this case here.

Only thing else I can say is good luck, you done tried everything else I would've done.