My PC will not turn on

**Robinzxp** · January 27th, 2006, 01:51 PM

Hi,

2 nights ago, my computer just turned off suddenly. I tried pressing on button few times but it didn't respond in any way (Even PSU fan don't turn on).

I thought problem is something to do with PSU, Motherboard or button which turns on PC.
I have tested PSU with working PC and PSU seems to work.
I tested button which turns on PC by putting in spare motherboard and button seems to be fine.
Interesting my motherboard does seem to be sort of working because it definitily does have power coming into it as I can see little LED turned on, on PCI network inferface card.

So question is, is my motherboard causing problem? I just want to be 99.99% sure before going off to buy new computer part (Motherboard).

Thanks, I hope someone can give some advice on this!

**DigitalJunkie** · January 27th, 2006, 03:23 PM

1. How old is your PC?
2. How many devices (hard drives, cd-rom drives, etc.) are inside your computer?
3. How many watts does your power supply provide?

**kokanezub** · January 27th, 2006, 03:28 PM

try plugging it in its own wall jack, mabey if its in an extention there isnt enough current going threw, try it in the wall directly check your poswer supply box to be safe take it for a 25 dollar check up at your local circuit city

**Robinzxp** · January 27th, 2006, 03:40 PM

Originally Posted by DigitalJunkie

1. How old is your PC?
2. How many devices (hard drives, cd-rom drives, etc.) are inside your computer?
3. How many watts does your power supply provide?

1. About 1-2 years old
2. 4 Hard drives, 1 Dvd-rw, 1 CD-rw, floppy
3. 550W, made by Antec

I had this set up for about few weeks. About few weeks ago, all I added was new Hard drive

**Auggie2k** · January 27th, 2006, 03:41 PM

Well there is your problem. Open her up and check all your connections to make sure none are loose.

With every connection, take them out and firlmy re-insert them. All have a sniff (really) for the smell of anything burnt.

**Robinzxp** · January 27th, 2006, 03:45 PM

Originally Posted by kokanezub

try plugging it in its own wall jack, mabey if its in an extention there isnt enough current going threw, try it in the wall directly check your poswer supply box to be safe take it for a 25 dollar check up at your local circuit city

I haven't tried plugging it in its own wall jack but I did try swapping for old motherboard with only CPU fan attached, and with that motherboard CPU fan is working whereas with motherboard I got currently even CPU fan don't run.

Originally Posted by kokanezub

local circuit city

I live in England so I'm not sure exactly what u mean on this but I'm guessing it's computer shop where they check for fault on PC?

Thanks everyone for replies!

**DigitalJunkie** · January 27th, 2006, 03:46 PM

You got a lot of devices inside, try as kokanezub suggested. If that doesn't work, it may be a cooling problem.
Take it to a shop, have them check it!

**Robinzxp** · January 27th, 2006, 03:47 PM

Originally Posted by Auggie2k

Well there is your problem. Open her up and check all your connections to make sure none are loose.

With every connection, take them out and firlmy re-insert them. All have a sniff (really) for the smell of anything burnt.

lol, I never though about sniffing inside PC. Interesting advice I'll try it soon! I already tried reconnecting so many times I'm scared I broke something by now lol.

**RACKnRAIL** · January 27th, 2006, 03:51 PM

No power, and you've checked all the connections, including all internal connections? Does the power supply fan come on? That wattage (550) should run your PC with ease. I am going out on a limb here, but if all is dead, I would test that power supply or possibly your motherboard and chip. Just my 2 cents

**Robinzxp** · January 27th, 2006, 04:00 PM

Originally Posted by DigitalJunkie

You got a lot of devices inside, try as kokanezub suggested. If that doesn't work, it may be a cooling problem.
Take it to a shop, have them check it!

It's sort of hard to get PC to shop and I also got lotzzzz of stuff on PC erm, I got from internet... my windows is... anyway, they don't report if u have unpaid software on PC do they?

**DigitalJunkie** · January 27th, 2006, 04:04 PM

Don't worry, usually they don't care! Use a password (not on the BIOS, just for your Windows OS), as they have other ways to test your computer. :)

**Robinzxp** · January 27th, 2006, 04:07 PM

Originally Posted by RACKnRAIL

No power, and you've checked all the connections, including all internal connections? Does the power supply fan come on? That wattage (550) should run your PC with ease. I am going out on a limb here, but if all is dead, I would test that power supply or possibly your motherboard and chip. Just my 2 cents

I have tested PSU with working PC and PSU seems to work.
When I press turn on button, no fan goes on at all. CPU fan, MB fan, PSU fan all are still.

How can i test my motherboard and chip?

I'm pretty sure it's my motherboard but I just want someone to say it before I replace motheboard.

**Robinzxp** · January 27th, 2006, 04:14 PM

Thanks for advice everyone, tommrow I'll take motherboard and ask them to test it as it'll be lot easier.

**DigitalJunkie** · January 27th, 2006, 04:25 PM

If you've cooling problem still, new motherboard or not may still give you problems. My advice is, if you take it to the shop. Better to take the whole thing!

**The Hunter** · January 27th, 2006, 04:37 PM

Personally, what I would do, is disconnect everything not needed to make it run. IE, all hard drives other than the one with the operating system on it. All CD Roms, burners, and so on. What you want is just the basic stuff running. If it boots with the other crap eliminated, then its a simple step by step process of elimination. Trying to figure out the problem with all that gear running is a waste of time, as that is what a computer shop will do. Remember KISS = Keep It Simple stupid. Im not calling you stupid, but making sure you eliminate a lot of things before you choose to take it to the shop. Good luck.