My computer doesn't start properly

[xxXEvandarXxx]

So I bought these things

Asus M4A78-E Motherboard,

Corsair VX 550W 80+ PSU,

4GB DDR2 PC6400 Corsair XMS2,

AMD Phenom2 X4 940 3.0Ghz, AM2+ Black Edition,

and a XFX Radeon HD4890 XXX 1GB

which I replaced the stuff in my computer with.

 

When I try to start it, the fans start spinning, I hear three beeps and then nothing happens and I have to turn it off.

 

I think I got all the cables and stuff right, but I'm not completely sure since this is th first time I've done this.

What should I do? :unsure:

[Pronam]

Corsair VX 550W 80+ PSU

XFX Radeon HD4890 XXX 1GB

You're quite at the limit, the Graphics already need 500W...

But what do you exactly mean? You see nothing, hear nothing else? I guess you the only thing you didn't replace, is your hard disk?

Have you tried running it without your graphics card...or plugged your monitor cable inside your motherboard-grap-port first?

Maybe it runs that card right now, instead of yours..and if you run it without your graphics in, you can see if you've got a power-shortage.

 

Let's see what others have to say about it...

[nosisab]

So I bought these things

Asus M4A78-E Motherboard,

Corsair VX 550W 80+ PSU,

4GB DDR2 PC6400 Corsair XMS2,

AMD Phenom2 X4 940 3.0Ghz, AM2+ Black Edition,

and a XFX Radeon HD4890 XXX 1GB

which I replaced the stuff in my computer with.

 

When I try to start it, the fans start spinning, I hear three beeps and then nothing happens and I have to turn it off.

 

I think I got all the cables and stuff right, but I'm not completely sure since this is th first time I've done this.

What should I do? :unsure:

The beep code is dependent on the BIOS.

When integrating new hardware like it seems to be your case, remove and reinsert carefully the memory sticks making sure they fits correctly and firmly, those plastic hooks (sorry I don't know how to name them in English) go inplace for themselves. Do not apply excessive force.

 

Do the same for the videocard, make sure the (it's) extra power connectors are correctly feed.

 

These two are the most common source of problem, but you should verify all connections and plugs and certify they are correctly and firmly placed. Do not wear the mobo surface!

 

Locate and reset the CMOS, it must be a 'jumper' of sorts that you short circuit for a brief time (make sure the power is completely down and not just in standby)

 

PS: You may want to insert one memory stick at a time and test. The slots priority must be followed too, look at the mobo manual for it.

[xxXEvandarXxx]

You're quite at the limit, the Graphics already need 500W...

I looked at Corsairs website, and they said 550W would be enough for my computer.

But what do you exactly mean? You see nothing, hear nothing else? I guess you the only thing you didn't replace, is your hard disk?

I hear nothing else than three beeps, but I can see a green lamp on the motherboard. And yes, my two HDDs is the only things I didn't replace.

Have you tried running it without your graphics card...or plugged your monitor cable inside your motherboard-grap-port first?

Yep, tried it. Nothing happened.

 

 

The beep code is dependent on the BIOS.

When integrating new hardware like it seems to be your case, remove and reinsert carefully the memory sticks making sure they fits correctly and firmly, those plastic hooks (sorry I don't know how to name them in English) go inplace for themselves. Do not apply excessive force.

 

Do the same for the videocard, make sure the (it's) extra power connectors are correctly feed.

 

These two are the most common source of problem, but you should verify all connections and plugs and certify they are correctly and firmly placed. Do not wear the mobo surface!

I checked that everything is in the right place and all cables and such are correctly placed.

 

Locate and reset the CMOS, it must be a 'jumper' of sorts that you short circuit for a brief time (make sure the power is completely down and not just in standby)

I did it, now there is 4 beeps, which according to the motherboard userguide means "No VGA Detected".

 

PS: You may want to insert one memory stick at a time and test. The slots priority must be followed too, look at the mobo manual for it.

Tried it too, still nothin changed.

 

Edit: now there's 3 beeps again...

[nosisab]

Reserved the most promising attempt for last

 

call a technician or representative. possibly you have a defective hardware.

[Syntax1985]

vicICE is right on wattage, im using the same card and 6gb ddr3, i had to get a 850w to accompany everything in my comp.

[nosisab]

vicICE is right on wattage, im using the same card and 6gb ddr3, i had to get a 850w to accompany everything in my comp.

Not quite, beyond that corsair PSU being enough, that high consumption would be under heavy load, not to the point to prevent the bios POST, and the OP said he tried the onboard video too without success.

 

assembling a computer is not so difficult if the procedures in the mobo's manual are followed to the letter, but troubleshooting when it fails is. calling a technician now may prevent more harmful attempts that may lead to yet worser hardware troubles.

 

I know more cases I'd like, of damaged CPUs from incorrect heatsink montage, mobo damaged for screw shortcircuits, for being wear, twisted, scratched and etc... boards damaged for static electricity ... many mistakes to enumerate them all here.

[xxXEvandarXxx]

Reserved the most promising attempt for last

 

call a technician or representative. possibly you have a defective hardware.

Ok I'll do that. Thanks for the help.