EamonOsiris

I have an Iqon desktop pc. It no longer boots up and outputs nothing to the monitor. It is receiving power as the fans are running and the LED's come on...although the LED is now flashing orange whereas it used to be blue when it was working. It makes a loud buzzing and clicking sound.
I have opened it and tried disconnecting each of the drives (hard drive, dvd drive, and floppy drive). The clicking sound went away when the floppy drive was disconnected, but besides that the pc continued as described in above paragraph. There is no floppy in the floppy drive to stop it booting. There is an orange light flashing on the motherboard just to the right of the processor. Just from listening closely it sounds like the buzzing sound could be coming from the processor or its fan.
Any help on what could be wrong or how I can fix it will be greatly appreciated.

Josh.McLauchlan

Ok first of all it sound's like your CPU fan need's replacing (buzzing noise) but that won't be stopping it from booting.

First of all ground yourself then remove all components and replace them all because it sounds like something is lose in your system.

Tell me what happens.

Thanks,
Josh

MBRx

your psu is bad annd to be replced

dai

what are you running
video card
cpu
m/board
ram
power supply
brand
wattage

check the listings in the bios for voltages and temperatures and post them

EamonOsiris

its my sister's pc so my knowledge of it is limited, i've asked her to find the doc's that came with it. the info that i have from lookin inside and outside the case is as follows:
build date was 06/12/2004
windows xp home edition.
asus v9520magic/t video card.
enlight 250v psu
intel processor (cant see what model of intel processor)
Gigabyte GA-8S661FXM motherboard
it has one stick of memory(ram), its sticker says "ddr64x64 pc2700"
dont know what size harddrive memory is
3 1/2 inch floppy
dvd drive
modem (dont know what make)

I cant get into the bios as it is outputting nothing to the screen. I havent been able to work with it much since my original post, but i did try disconnecting the processor fan. This fan does sound like its in trouble, it is the cause of most of the buzzing noise. But there was still a faint buzzing sound coming from the pc without the processor fan working.

dai

enlight 250v psu

do you mean 250w

see if you can borrow another psu to try in it

EamonOsiris

I only got to try a new psu in the pc a few hours ago. still not working. it does sound much better so i do think there was something wrong with the last psu. it sounds like it is in perfect working order but still will not output to the screen, not even when you first push the power button, the monitor picks up no signal.

When I turn on the power now it is making a sound like it is about to boot up but then that just stops suddenly, would it be possible that the faulty psu would have damaged some other component, possibly the harddrive i'm thinking?

Also the LED is still orange, it used to be blue when the pc was working properly.

Net Jockey

Hello...
It can take all of 10 seconds to fry a processor...with the fan removed.

My thoughts on power supplies...Related to the negative effects of heat on the computer.

Manufacturers test their PSU's at a set temperature...from this their rating is determined... for most this NO. is 25 degrees Celsius...which falls short of the temperature that most computers are capable of achieving.

Given that a PSU will actually lose 2-5 watts per one degree of heat above the 25C-testing temperature...coupled with fact that computers tend run at 10 degrees higher than room temperature. In the summer time when the room temperature can easily reach 80 degrees F. your computer will be running at 33 Degrees C. or 90 Degrees F.

So the...math can make...your 500 watt power supply into a 460 watt unit.

In addition to this...what needs to be taken into account is that each degree that your computer components are operating...under powered...adds more heat to the equation.

The above has not taken into the issue of high quality vs poor quality units...Power supplies convert voltages from wall outlets to lower levels used by the PC. During this conversion, some power is lost as heat. The efficiency level of the PSU determines how much extra power must be put into the power supply to run the PC. A high quality PSU can help reduce the noise and heat generated within a computer system. The higher the efficiency rating the less heat the PSU has to deal with.

Therefore heat is the computers enemy...The hotter the temperature your PSU is forced to run at...the poorer the supply of power the rest of the components will receive...which has been known to lead to such things as crashes, freezing, rebooting, BSOD’s, and video distortion, as well as partial and complete failure of other components.

The fact is very few PSU’s are capable of producing the wattage that the companies advertise.

For a very good comprehension of recommended brand names, wattage, and models in listed categories...Plus much more...check out this link.
Power Supply Information and Selection

PCI-E requires 26 amps at 12 volts. That's a 650W...Quality...PSU.

dai

what brand and model wattage psu did you get

check the m/board for swollen or leaking capacitors

your psu needs to out put a min of 18amps on the 12v line

EamonOsiris

well, my sister finally took the pc off me and took it to some pc repair shop, they said motherboard and harddisc were busted. Thanks for all the help anyway.

dai

glad you have it sorted