Faulty Video Card or CPU? How to tell - No display

[arh2o]

First off, my computer speaker is getting no beeps so i'm assuming everything is passing.

System powers on, cpu fan spins, power supply fans spin, video card fan spins, video card has lights on the back of the board which are lit.

It's the Sapphire 4870 http://www.newegg.com/Product/...x?Item=N82E16814102810

I've connected the power cables to the card.

I know it's not my motherboard, as I just replaced it twice. My power supply seems to be running fine. Unfortunately I do not have an extra PCI Express video card to test it with.

I took my RAM out and booted. System beeps 3 times. Clearly my speaker is working and it's warning me that theres no RAM installed.

My CPU heatsink is fastened correctly. Basically the system remains on, everything is spinning, everything seems to be working, but I get no display output.

Tried VGA cable, tried different monitors, definitely no signal coming out.

Since the system remains on and i'm not getting any warning beeps, my question is:

Can i limit it to three things?

1.) Faulty video card

2.) RAM?

3.) CPU? I'm not hearing any beeps, but could the CPU be dead?

 

[Tlkki]

Mobo? RAM used?

Probably ram not getting enough voltage or someshit. Borrow a stick and give that a go. Basically everything can prevent a post. Tried /w 1 stick+cpu+gpu only?
I would say computers can boot without a working video card so unless you see some hdd activity indicating a bootup you can rule out 1.

 

[max347]

Make sure you have both the 24 pin power in, and the 4/8 pin power in. Lack of that 4 or 8 pin power connector in place would cause your symptoms.

 

[CoinOperatedBoy]

Originally posted by: arh2o
First off, my computer speaker is getting no beeps so i'm assuming everything is passing.

That's a bad assumption, especially if you're getting NO beeps. You should probably get at least one beep for a successful POST. Since you get beeps when you yank the RAM, your CPU should be fine. Reset your CMOS. Then try to boot with a single DIMM of whatever you've got, or as Tlkki suggested borrow or buy some replacements. Make sure the RAM voltage requirements are met by whatever your mobo supplies by default. If you're trying to boot with 2.1V RAM and your board is supplying 1.8V, you may not be able to POST.