I need help with my custom built pc not turning on please.....

jimb0616 · 14 Dec 2010

heyyy, another jimbo

look at my last post.

Ugh, I googled my issue, and someone had a similar issue with the pc not booting with 8pin plugged in and it turned out his mobo was "burnt".. which I'm assuming dead. I'm hoping mine is not because it's just such a pain in the butt to replace a mobo. Just an FYI, every fan, light and HD runs with the 8pin plug UNPLUGGED but when it's plugged in, it will not turn on at all. I guess I can hope for the best and try reseating everything AGAIN

..."hey sweetheart, i know what i want for christmas now".. lol my wife will read this because i'm using her laptop atm

also, I don't hear any beeping but I don't remember ever hearing beeping but some website I was reading said you NEED a pc speaker because it could be causing your pc to not boot....???

TVeblen · 14 Dec 2010

Are you overclocking the CPU? Or anything other than the Video?

That board has Asus "Anti-Surge" protection circuitry. If you are overclocking, and if you are lucky, that may be all it is!

Clues here: ASUS Anti-Surge Motherboard - Motherboard Processor & RAM

jimb0616 · 14 Dec 2010

TVeblen said:

Are you overclocking the CPU? Or anything other than the Video?

That board has Asus "Anti-Surge" protection circuitry. If you are overclocking, and if you are lucky, that may be all it is!

Clues here: ASUS Anti-Surge Motherboard - Motherboard Processor & RAM

No, I never OC'd the CPU in this pc because I never really had to. It's the mvp-deluxe with the onboard wifi thing (which never properly worked).

TVeblen · 14 Dec 2010

The 8 pin connector powers the CPU. So if you plug it in and the board shuts down then we can assume the protection circuitry is working and there is problem with the power or the CPU or the MB.

Check and double check:

The modular connection at the PS and the MB. (Do you have a multimeter to test for voltage at the modular output?)
The CPU heatsink and fan (if you plug the CPU fan into a case header will it spin?)
The CPU seat. Check carefully for bent pins.

You might also want to try a CLRTC as a last ditch effort. This resets the processor clock.

Note all your current BIOS settings
Shut down the computer > remove the power cord.
Remove the 3v battery.
Move the CLRTC jumper from pins 1-2 to 2-3.
Touch a metal part of the case and Press and Hold the reset button for approx. 30 seconds to discharge all power from the board.
Put the CLRTC jumper back on 1-2.
Replace the battery > replace the power cord > boot.
Immediately go back into BIOS and reset all your preferred settings. If the CLRTC worked you will need to reset the date and time.

Obviously the BIOS settings will not apply in your case as you can't boot. But if you do boot, then reset your settings before trying to start Windows.

Good Luck.

jimb0616 · 14 Dec 2010

thx, i'll give that a shot when i get back home. :)

jimb0616 · 14 Dec 2010

well, i tried what you said, and it's still not turning on when i plug the 12v/8pin cable in. i don't know what to do from here... i hate taking my pc to techs because they charge so much for the easiest things. should i buy a new cpu and test it, or a new mobo or both.. ugh, if any of u live in the tampa, FL area let me know lol if you all have any other ideas that might help, plz post. thx again for the help so far. for now, my baby is broke which forces me to watch TV.. booooo!

James

linnemeyerhere · 14 Dec 2010

James,
I'm no computer tech but something in me is thinking mobo. But with a new mobo comes all sorts of questions, plus will it support your existing ram and the like. Did you un-seat the CPU and look closely at the pins, then re-seat and place new thermal compound? Did you blow out the ram connections and re-seat ram? How are you cooling your CPU, stock cooler and fan? Have you test the fan on the CPU?

jimb0616 · 14 Dec 2010

linnemeyerhere said:

James,
I'm no computer tech but something in me is thinking mobo. But with a new mobo comes all sorts of questions, plus will it support your existing ram and the like. Did you un-seat the CPU and look closely at the pins, then re-seat and place new thermal compound? Did you blow out the ram connections and re-seat ram? How are you cooling your CPU, stock cooler and fan? Have you test the fan on the CPU?

Yes, I took the cpu out and looked at it, it looks fine however the thermal stuff is very thin and is not covering the entire core (amd phenom BE). I reseat it but i dont have any thermal stuff to add. I am using the stock heatsink/fan that came with it. I also did reseat the ram and blew out the connections with duster, but I have 2 empty ram slots that I didn't try yet... maybe I can put my two sticks in those two slots and give it a shot. One thing that works in this type of situation is you take a pencil eraser and rub the eraser on the gold ram connectors but I haven't tried that yet (that worked for me many times with NEW pc's that wouldn't boot up while I was working for the school board). All the fans in the case, cpu, and gpu's are working when I turn the pc on without the 12v/8pin cable plugged in but once I plug that in it doesn't turn on. Also, when it does turn on (with out 8pin cable) and then I turn it off.. the green light on the mobo blinks many times then stops. I don't really have the $ at all to replace much. This mobo was top of the line back when I built this pc and still sells on ebay USED for $120.00 which is only $20.00 short of the retail price when I bought it lol. This is such a huge bummer for me because that pc is my life, I know the HD's are fine but still. I have an older pc i built but it's much older with an AMD cpu but nothing in the old computer is compatible with the newer one. I'm stuck.

linnemeyerhere · 14 Dec 2010

Man I feel your pain. Not sure I have a good next move, they all just seem like educated guesses and they all cost real monies. Is your gut pointing to the CPU? I see tiger has the the 3.4 Phenom for $169.00. Did you know that AMD will test your CPU for free? You should call them and ASUS as MSI was also willing to test my mobo for free. You of course pay the shipping to them and have some down time but that's better than going with costly guesses.

sygnus21 · 14 Dec 2010

At this point in time, you could try another power supply, or call ASUS about the motherboard. I wouldn't just go dropping money hoping to find the issue.

I did find this statement curious.....

jimb0616 said:

Just an FYI, every fan, light and HD runs with the 8pin plug UNPLUGGED but when it's plugged in, it will not turn on at all.

Did you try the 4-pin connector? I'm not familiar with AMD boards, but some motherboards only require the 4-pin connector instead of the 8-pin one. What does your board's manual say about it?

You DID check the manual right? - This would also include the power supply's manual as well.