No fans, No lights, No POST

niceguyrichy · Mar 5, 2010, 09:02 PM

hey guys

round a friends tonight, one of their comps having some issues.
title says all, it's completely dead.
so far he's swapped out everything for new, except the CPU and he hasn't changed the case (i suspect power button/cable problem personally, its happened to me).

he doesn't have a spare cpu to test, but would a fried cpu leave everything else completely dead like that ??

or has he just been real unlucky and got himself two DOA mobo's ?

thoughts ?

Tyrsonswood · Mar 5, 2010, 09:45 PM

Front panel switch is easy to check, I've seen the switches go bad too. Don't know if a dead cpu would do this or not.....

niceguyrichy · Mar 5, 2010, 09:49 PM

Quote:

Originally Posted by Tyrsonswood

Front panel switch is easy to check, I've seen the switches go bad too. Don't know if a dead cpu would do this or not.....

yeah, see I've had cpu's fry, but the rest of the system always tried to do something..
but then, if the cpu was borked, and was immediately screwing the mobo, that might do it too, huh ?

Tyrsonswood · Mar 5, 2010, 10:15 PM

I guess that's possible...... won't mobos produce post codes with no CPU? Try with no cpu in the socket......

BlueMak · Mar 5, 2010, 11:37 PM

Does the PSU fan work?
Also, many mainboards have a light on them, does it? If yes, see if it turns on or not.

Judas · Mar 9, 2010, 04:03 PM

Yank everything out... leaving only the motherboard and the cpu and the power supply connected to it.

even unplug the usb and other headers including the power switch and reset switch and such..

so basically 100% bare.

Using a jumper you may have laying around, quickly JUMP the 2 pins that are for the power switch header (if your careful you can use any metal thing be it scissors or screw driver PROVIDED you only connect those 2 pins very quickly)

if the board doesn't beep and scream at you when it fires up or the fans don't turn on, i think your kinda toast.

Last resort is to remove the CPU completely and leave just hte motherboard and psu connected.. it should beep at you

oh and make sure the motherboard has a pc-speaker.

niceguyrichy · Mar 9, 2010, 05:51 PM

oh, thanks all for suggestions

i hear third-hand that he's sorted it, haven't found out how yet.

rep coming where i can

iPlayer · Mar 10, 2010, 02:21 PM

On some mobos the cmos reset ones will also start it up, while resetting bios settings to default values. I do this very often.

What was the problem then?

Mar 5, 2010, 11:37 PM	#5
BlueMak HH's Asteroids' Dominator Join Date: Nov 2004 Location: Hellas->Macedonia->Thessaloniki Posts: 13,465 Rep Power: 349 System Specs	Re: No fans, No lights, No POST Does the PSU fan work? Also, many mainboards have a light on them, does it? If yes, see if it turns on or not. __________________ The people who are regarded as moral luminaries are those who forego ordinary pleasures themselves and find compensation in interfering with the pleasures of others(Bertrand Russell)"You go into Afghanistan, you got guys who slap women around for five years because they didn't wear a veil,You know, guys like that ain't got no manhood left anyway. So it's a hell of a lot of fun to shoot them." - Lt. Gen. James N. Mattis This is slavery, not to speak one's thought. [Euripides-The Phoenician Women (c.411-409 B.C.)] http://www.macedonia.info/FALLACIESANDFACTS.htm *Sic semper tyrannis.*

Mar 10, 2010, 02:21 PM	#8
iPlayer Filled with noobsauce Join Date: Nov 2009 Location: between the buns Posts: 1,450 Rep Power: 59	Re: No fans, No lights, No POST On some mobos the cmos reset ones will also start it up, while resetting bios settings to default values. I do this very often. What was the problem then?