No bios beeps - blank screen - HELP!

jamieh

Hi all,

I just had my first attempt of building a pc.

I've powered it on but I get no bios beeps and a blank screen.

Everything seems to be powering up - hdd, dvd, gpu fan etc etc but that's all I'm getting.

Anyone have any ideas what the problem could be?

Fatal Except1on

need a bit more details on your components!!

thehomeofDob

Make sure the case speaker is pluged into mobo - then remove gpu, cpu and memory. Power up and see if it beeps. If there are no beeps your mobo is more than likely dead.

jamieh

thehomeofDob wrote: »

Make sure the case speaker is pluged into mobo - then remove gpu, cpu and memory. Power up and see if it beeps. If there are no beeps your mobo is more than likely dead.

Hi lads,

Thanks for the replies.

It's an Antec 300 case which has no speakers. Presume that would explain lack of bios beeps?

It's an ASUS P5QL mobo and the graphics is a Gainward Geforce GTS 250

I tried changing for VGA to DVI to connect to my monitor but no joy.

I just noticed that if I mess around with Caps lock and num lock on the keyboard the lights on the keyboard don't turn on/off ....presume this isn't a good sign?

Fatal Except1on

Nope, not a good sign. Remove the processor and reseat it.
Then boot with the bare minimum - 1 stick of ram, processor and GPU, test it and see if it boots.

Also, make sure the power is going to your GFX card!!

jamieh

Fatal Except1on wrote: »

Nope, not a good sign. Remove the processor and reseat it.
Then boot with the bare minimum - 1 stick of ram, processor and GPU, test it and see if it boots.

Also, make sure the power is going to your GFX card!!

Tried reseating the processor - seems to match up. All the notches are matching - presume it can only go one way?

There's 12 power pins on the gfx card. There's a cable marked "pci-express" from the psu which has 6 pins - i'm using that to power the gfx card. But there's still 6 spare pins on the gfx card - but I don't know what they could be for. The fan is powering up so I presume that means the gfx card is ok?

Fatal Except1on

Ah, there's your prob. You are running a 450w PSU yes?
It only has support for 6pin PCIe. However, your card needs 2 of these. Your power supply is not giving your card enough.

Look in the graphics card box/packaging for another 4-pin molex to 6 pin PCIe adaptor and use it to give the card extra juice!



Looks something like this:

StopNotWorking

Phew!

You might want to look into getting a better power supply by the by, 450 will probably do short term but I doubt it would last the test of time.

Fatal Except1on

StopNotWorking wrote: »

Phew!

You might want to look into getting a better power supply by the by, 450 will probably do short term but I doubt it would last the test of time.

Totally agree. 450w will do now but a 600w+ would be a better choice, especially for upgrading.

jamieh

Fatal Except1on wrote: »

Ah, there's your prob. You are running a 450w PSU yes?
It only has support for 6pin PCIe. However, your card needs 2 of these. Your power supply is not giving your card enough.

Look in the graphics card box/packaging for another 4-pin molex to 6 pin PCIe adaptor and use it to give the card extra juice!



Looks something like this:

Really got my hopes up there .

Found that adapter. Looks identical to the one in your pic. Two seperate molex connections from it so connected two molex to them but still no joy

Does this mean it's defo the mobo that's faulty or is there anything else I can try?

StopNotWorking

I'd say the PSU can't push your graphics card. what is the power supply?

Fatal Except1on

If you could give us a detailed list of your components. Model numbers/etc.
Will try to be of more assistance!

Fatal Except1on

Also ensure that you have enough power going to the board?

Gigabyte GA-EP43-S3L

Make sure the other 4-pin power is going to the board!

O'Coonassa

Take the board out of the case and see if it makes POST, I've seen it where solder on the back of the mobo can short them out and stop the system powering on and you have to slap some kind of insulating material such as a bit of card behind the board.

jamieh

Fatal Except1on wrote: »

Also ensure that you have enough power going to the board?

Gigabyte GA-EP43-S3L

Make sure the other 4-pin power is going to the board!

Mr.Fatal Exception ....I could kiss u!! :P

Just connected the spare 4 pin and it worked

Thanks a million!

StopNotWorking

lol

enjoy your new computer!

Fatal Except1on

haha, cool man.

Enjoy your build!