PC wont turn on

my self made pc has stopped working, dont know why one day went to turn it on and nothing happened. I read around and tried the various things such as removing RAM sticks one a time to see if they are faulty, same with hard drives etc nothing worked still wouldnt switch on.
after more reading around it seemed that only 2 things could cause this particular issue faulty motherboard or psu, I have since replaced both of those yet still cant my computer to turn on, any ideas?
Answer #1
could be an issue with the power switch or your smps might be dead.
Answer #2
have you checked your power cables going into the pc ??
Answer #3
I have since replaced both of those yet still cant my computer to turn on, any ideas
This makes me wonder if you’ve explained the situation correctly or not.
Do you mean it literally does not turn on, Or that it does but you don’t see anything on the screen?
Also, You’re aware that new PSUs come out of the factory switched off, Right? (There’s an ON/OFF switch on the back)
Are you sure you connected everything correctly?
Provide your full computer specs.
Answer #4
Have a look at the fuse in your plug!
Answer #5
I have since replaced both of those yet still cant my computer to turn on, any ideas
This makes me wonder if you've explained the situation correctly or not.
Do you mean it literally does not turn on, Or that it does but you don't see anything on the screen?
Also, You're aware that new PSUs come out of the factory switched off, Right? (There's an ON/OFF switch on the back)
Are you sure you connected everything correctly?
Provide your full computer specs.
I was wondering that – a new MB and PSU is essentially a new computer.
Either the cpu is dead or it’s a tiny simple thing overlooked – fuse, broken wire in cable, damage to the actual wall outlet.
Maybe it IS starting up but the monitor is dead (or turned off )
Is there ANY activity at all inside the case – can you eject the cd drive, are there any MB lights on, does hard drive start up?
Or is it all dead-dead, fully dead?
Answer #6
Is there any beep when you start up or is it just not turning up at all? Fan spinning, hd making sound and things like that?
When you install the new motherboard. Did you let it lay/touch the case? Or did you use standoffs which raised the motherboard?
Did you test the psu (hotwire) before installing it into your computer? Like above. List your specs and tell us if it turn or but nothing happen or it just dont turn on at all.
Answer #7
ok, no nothing at all happens when i hit the button, nor is there any beeps/noises Ive checked the plug/fuse and done the hotwire trick to ensure power is flowing through the psu ok
full specs:
Intel Core i5 3570K – 3.4 GHz Quad-Core Sapphire 7950 3gb dual oc flex edition Corsair TX650M 650W Modular PC Computer Power Supply PSU Gigabyte GA-Z77-D3H Motherboard
CORSAIR CARBIDE 300R case
Asus DRW24B5STBLKBGAS SATA OEM
Seagate ST1000DM003 1TB SATA 3 Hard Drive 120GB OCZ Technology, Summit, MLC-Flash, 2.5″ SSD,
Answer #8
So you established that the wall socket is providing power and that the PSU somewhat working, That’s good!
I said “somewhat” because there’s still a chance it’s the culprit, I’ll explain on that in a bit.
First let’s go thru the basics, Which are the connections. In order for the motherboard to get power & post, 6 things must be properly connected, Which are:
1. The power/reset buttons and leds. If you haven’t connected these, Or if you did and you’re unsure if you’ve done it correctly, Then I suggest you refer to your motherboard manual:
http://www.gigabyte.com/products/product-page.aspx?pid=4140#manual
2. The 24PIN motherboard connector.
3. The 4PIN connector (Located behind the PS2 port)
4. The processor (Well, It’d still work without it, But nothing would appear on-screen)
5. The RAM (At least one stick is required)
Like the previous one however, It’d still work without it (Nothing on screen tho)
6. The video card (Unless integrated)
Also, If your video card has one or more 6/8 PIN PCI-E power connectors, Make sure you connect the plugs to em!
If all of these are properly connected, Then it should turn on. Unless your PSU is not working properly!
Let me explain to you how this works, The PSU provides the motherboard with 5 volts standby power at all times (Even when the computer is off) and your case power/reset buttons are connected to the motherboard obviously. So basically, If the PSU is working properly and provides 5V standby to the motherboard, It should turn on (Provided everything is connected correctly) but if it doesn’t then nothing would happen when you push the power button! There are 2 ways to test this:
1. The motherboard led, Almost all motherboards have a green light which is always on, Which indicates it’s receiving standby power. If you don’t see such a light, Then it’s either DOA, Or the PSU is at fault.
2. Testing it with a digital multimeter, Set the dial to 20 DCV (DC Volts) and insert the black probe into one of the black wires of the 24PIN plug, And the red one into the purple one. You can do this while the plug is already connected to the motherboard, So you don’t have to disconnect it first. Just be gentle when pushing the probes in (Important note: Remove the probes before turning off the multimeter!)
Answer #9
I`d get a Professional to look at it.. and pay the price of consol.. lol
Answer #10
You checked the case to mobo power connection is OK. My old PC has a bunch of those fiddly little connectors that connect to tiny pins for various functions and if you are not careful it’s easy enough to put the tiny connectors onto the wrong pins resulting in nothing happening when you press the case on/off button.
Answer #11
Ive got it working now, couldnt tell you exactly what the problem was, but after about 5 very slow and careful rebuilds everything seems to be working ok. Must have been some small connection as others suggested so i probably didnt need to waste that much money replacing two major components- oh well, all seems fine for now
Answer #12
but after about 5 very slow and careful rebuilds everything seems to be working
Hehe!! That reminds me of my first PC build ….. when you can’t figure it out rebuild the lot …. a great way to learn though! Glad you got it going, I guess you are smiling now!
Answer #13
Well done – there’s nothing like working a problem out yourself (Ok, with guidance from here, but you did the WORK yourself).
Award yourself 2 ability points and a new skill group with 3 skill points to allocate.
(Sorry, too much Incredible Van Helsing).