Do all new motherboards do this, did you first build do this?

[Vidya]

Just put together a new gaming computer etc and when I pressed power it booted, flashed loads of red lights, then shut off. A few seconds later it booted itself back up and ran like a gem and booted bios

What is this, my other friends computer did this too at his first boot and I was wondering why it doesnt do it again when you clear cmos.

Just wondering tbh






SIDE NOTE OFF TOPIC: Two fans on my case give stupid sensor readings in bios, what could be broke on the fans since it is the fans

 

[triggerthat]

I noticed the same when a friend recently put together a new machine. Perhaps some of auto-detection?

 

[cammy5477]

I think its something to do with the dual bios on newer boards

My rampage 4 extreme does it quite often nothing to worry about

 

[Lemin]

Yes, some mobos do a post test.

 

[Blue160]

Some motherboards do, some don't. If they do its only after switching off the power completely. Completely normal and nothing to worry about.

 

[triggerthat]

SIDE NOTE OFF TOPIC: Two fans on my case give stupid sensor readings in bios, what could be broke on the fans since it is the fans

Tried taking your finger out of the fan and then check the results? Happened to me a few times.

 

[Vidya]

What is it tho mine littially powered up for 2 seconds then shut down then booted back ip

 

[Kaapstad]

OP it happens on my mobo R4E when I change or fit new hardware or turn PCI-e slots on and off. As long as it is not happening everytime you boot its not a problem.

 

[Blue160]

What is it tho mine littially powered up for 2 seconds then shut down then booted back ip

It does a self test before booting if the power's been turned off.

 

[reflux]

It's a self test feature, common on enthusiast motherboards. Nothing to worry about at all.

 

[Vidya]

It's a self test feature, common on enthusiast motherboards. Nothing to worry about at all.

It only did it once on it's first ever boot, it never did it again, just like to know why it did it, it litrially came on for 2 seconds

 

[Sir SpankalotUK]

my old asus board does this too after power has been off to the computer

 

[Blue160]

just like to know why it did it

It's been explained several times hasn't it

If you turn the power supply off next time you shut it down it'll probably do it again.

 

[mmj_uk]

It seems to be a 'feature' that has crept into Asus' Intel motherboards, I can't speak for AMD as I've not had one in while.

 

[~Divine~Wind~]

Mine did that when I flashed the Bios... thought I'd killed it

 

[ReekiTiki]

ive been wondering about this for ages. thanks for clearing things up.

 

[nath247]

My Rampage IV Extreme did this once when I powered it on having an overclock of 4.8 GHz.

I remember some old cheapo socket A puke brown/yellowy ASUS motherboard I had back in 2005 did this every time and it annoyed me, think I snapped the motherboard in half in the end due to all the problems I had with it.

 

[V F]

It seems to be a 'feature' that has crept into Asus' Intel motherboards, I can't speak for AMD as I've not had one in while.

The Asus Crosshair IV Formula does it as well.

 

[gublok]

990fx sabaretooth does it to it normal

 

[-Mike-]

Yes, some mobos do a post test.

All boards perform a POST, it might not be every single boot with modern boards I don't know.

(Power On Self Test) or as you put it

Power On Self Test Test