Monitor blank screen

[clan1]

Hi everyone!

I just build a new system. The computer boots, I get no beeps and my monitor doesn't display anything.

SPECS:

Intel Q9550 Processor
Asus P5Q Pro Motherboard
Corsair x750 Power Supply
2 x 2Gb CORSAIR RAM
HD RADEON Sapphire vapor - x 4890
1To Western Digital Hard Disk
4 different huge fans in my chassis.

Monitor Samsung P2270 HD

Its very frustrating. Everything starts well but I don't get anything on my screen.

Monitor works well (fantastic oblivion with my old Laptop ATI Radeon x700 -still works).

I did try this system with a regular ATI RADEON HD 4890 (three red lights on 1601, 1602, 1603). I thought it was the graphics card. I replaced it with the saphire.

Now I get 1 red light (Ctf).

It is the first time I did assemble everything on my own.

I read the manual for my Motherboard. I have checked 50 times the cables and everything seems to be well connected.

And I did try to build my motherboard outside of the case with no success.

Questions:

Is it not good enough my system? Something is there I might not know that isn't compatible? I did some research before buying it.

What else is there I can try? Should I go for an NVIDIA? Is it possible the ATI and the monitor are not compatible? Do you think it is my motherboard?

Thanks a lot for your help...

 

[shortstuff_mt]

It sounds like maybe you've already seen this, but just in case:

http://www.tomshardware.com/forum/261145-31-read-posting-boot-problems

If you're absolutely sure that the 24-pin motherboard power connector, 8-pin CPU power connector, and both PCI-E power connectors are plugged in, then I'd focus on the RAM next. Have you tried booting with each stick of RAM installed by itself?

 

[win7man]

have u made sure everything is plunged in right and that the power connectors to the graphics card r connected

 

[clan1]

Thanks a lot both of you! I will check again all the cables. See if there is any of them a little bit loose. Then I will focus on the RAM. Both of them are in the yellow sockets. I read that they come in pairs, and they have to match the colors. I will try then first with just one, etc...

Thanks a lot for the link. I did read it... but I think I should do it again... you never know!

 

[win7man]

well, ur mentioning the ram in the sockets, u will have likely 4 sockets, u would have 2 ram sticks, or 4, if u have 4 then ur fine, but if ur using 2, then yes they must both be in the same color slot, but also they will require the right colors, as a certain color must be filled up for an other one to be