Custom built PC - monitor not turning on

February 4, 2011 at 05:41:28
Specs: Microsoft Windows XP Professional, AMD Athlon II / 4GB

I've finished building my (first) new PC but the monitor isn't turning on.

The monitor seems to react to me turning the computer on/off, though. The standby light blinks on, trying to detect the VGA.

The motherboard has 4 lights which, according to the manual, indicates that CPU is at "power stage 4". All 4 of these are on. The fan on the GPU is spinning and I assume the power supply is good enough (this setup was recommended based on my budget). The num lock light on the keyboard isn't on when the computer boots (I've only used old computers, I assume the num lock lights still usually come on when the system is booting) but I can turn it on/off.

I think that's everything I can test..


CPU: AMD Athlon II X4 640 Socket AM3 3GHz 2MB
PSU: Corsair 430W CX PSU 4x SATA 1x PCI-E
GFX: PowerColor HD 5770 1GB GDDR5 DVI HDMI Out PCI-E
MOBO: MSI 870A-G54 Socket AM3 8 Channel Audio ATX Motherboard


See More: Custom built PC - monitor not turning on

Report •


#1
February 4, 2011 at 06:03:11

500w +12v@34A is the minimum requirements to run hd 5770(it use less than 150w). If the board has IGP try it without the v-card or use weak v-card. if u didn't benchtest do it now.

We can not fight new wars with old weapons, let he who desires peace prepare for war - PROPHET.


Report •

#2
February 4, 2011 at 06:12:56

I only have one GFX card. Dunno what "HD 5570" is (I assume something to do with high definition - which I have no interest in).

How would I benchtest?

EDIT
Hmm.. apparently my GFX card requires 450W minimum system power. Guess a bigger PSU would help, but I'm not sure if it means 450W altogether or counts the reduction of power from plugging other things in.


Report •

#3
February 4, 2011 at 06:53:07

I understand it's your first system but u should do more research. ATi Radeon Hd 5770 is a video card without it u can't see anything on screen(unless u have IGP).
The board u have doesn't have IGP v-card is the only option u have. The power requirement isn't 450w, it's 500w +12v@34A. In the original post u mentioned hd 5770 and now hd 5570, which one do u have? Did u perform BENCHTEST?

We can not fight new wars with old weapons, let he who desires peace prepare for war - PROPHET.


Report •

Related Solutions

#4
February 4, 2011 at 07:00:32

Read this http://www.techsupportforum.com/for...

We can not fight new wars with old weapons, let he who desires peace prepare for war - PROPHET.


Report •

#5
February 4, 2011 at 07:33:05

I know what a GPU is and it is 450W minimum.

That PC building guide is a lot more detailed than the one I went by. Since I've never had to handle installing one previously, I'm wondering if you can tell me whether there could be anything that wrong with the CPU. I felt that "power phase 4" was confirmation of the CPU responding. If not, I think that may be the thing to investigate, as I'm used to everything else.

So by bench test you meant running at minimum requirements? Yes, I've done that. I did it again, removing the hard drive and a fan. Still nothing on-screen. The same thing, screen reacts to the computer starting and the GFX card fans are running fine. Everything is brand new and out of the box, especially the RAM which just arrived today (I built the computer without it and tested booting, which gave the same problem - decided I'd wait for the RAM before doing any real tests).

edit
And no beeps when the PC speaker is plugged in, either.


Report •

#6
February 4, 2011 at 08:22:01

Where did u get 450w minimum? Look at your original post "power color hd 5770". Pull out the necessary compoents(including the motherboard) out. Did u connect additional power cable to the v-card?

We can not fight new wars with old weapons, let he who desires peace prepare for war - PROPHET.


Report •

#7
February 4, 2011 at 08:52:41

I fixed it by reseating the CPU.

Where did I get the 450W minimum? Well, I own the product in question, for starters...

Thanks for the help. Now I just need to get Windows 7 onto a DVD. Ugh...


Report •

#8
February 4, 2011 at 09:06:37

Don't get all wrapped up in the wattage recommendation. That recommendation is for the entire system with the card, not the card alone. And there is a "safety factor" built in. The Corsair 430W is an decent PSU & is more than adequate to handle your entire system.

Your main problem is you didn't benchtest your hardware. Now you have no idea if you have a hardware problem or an installation problem. I suggest you start from scratch.

How to Bench Test Your System


Report •

#9
February 4, 2011 at 09:35:52

I already said I fixed it. And I'm the one saying that the power supply IS adequate, or were you talking to the other guy?

I believe I did "bench test", if that howto is right.. Since I did nearly the same things as the steps in it when building the system (except I put the mobo into the case after installing the CPU and heatsink).


Report •

#10
February 4, 2011 at 12:11:29

If you had benchtested, you would have caught the CPU problem before the board went in the case. Regardless, you got it figured out & that's all that matters.

Report •


Ask Question