New built computer not working

[Skeltons]

Hello everyone,

I have a friend who gave me some computer parts to build a computer for him. I've built computers before and I've never had this issue.

Build:
CPU - Intel Core i5 2.9 GHz Processor
CPU cooler - Nvidia Zalman CNPS9500 AM2
Motherboard - asus p7p55d evo
Memory - Crucial Ballistix sport 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600
Video Card - Asus HD 6870
Power Supply - CMPSU-650TX 650W ATX12V

The problem is this: Everything works fine, motherboard turns on, fans work, power supply beeps, and I can hear that noise which indicates that the disk drive is working. However, when I connect the computer to any monitor, the monitor goes into sleep mode for some reason and nothing is displayed. I cannot get to the BIOS or anything, it's just plain black. The graphics card was working on his previous computer, so I do not think that that is the problem. Any thoughts?

[Zeddicious]

Have you tried taking the graphics card out and testing to see if the on-board video VGA is working? If so, you know where your problem is! Thats my first guess, good luck!

[Skeltons]

The board does not have its own VGA slot, but what I did was to go out and get a really cheap Nvidia 210 graphics card and plug it into every slot. Needless to say, it did not work either.

[Artarist]

The power supply beeps? The power supply doesn't have anything that should beep as far as I have ever seen. Motherboard has a speaker which will beep that the bios is working properly if it posts. If you are getting all power on and nothing ont he screen my first thought would be you have a standoff touching the board in the wrong spot.

[ProfessorTjc]

If you can't even the see the Bios your motherboard is messed up.

[Moogie423]

I've had that same exact problem, it turned out that the RAM was running at a speed not supported by either the motherboard or the RAM itself. Try putting in a stick of older slower RAM and going into the bios to play with the RAM speed settings until you find one that works with the new RAM.

[Skeltons]

Thanks for your suggestions, but nothing worked I've noticed something else...the CPU led is stays open on red...I'll probably have to replace the motherboard after all.

[glo]

CPU - Intel Core i5 2.9 GHz Processor

I'm pretty sure you installed a 1155 socket CPU into a 1156 socket. There aren't any 1156 i5 processors @ 2.9Ghz. However, there certainly is a Sandy Bridge i5 @ 2.9Ghz.

http://ark.intel.com/products/53445/...up-to-3_20-GHz

Take off the cooler, remove the paste and physically read what the model name is on the chip.

[Skeltons]

The processor has absolutely nothing written on it, it looks pure silver on top. Is there any way to find out the model name? It's pretty old so I'm pretty sure my friend threw the original box away.

[yurano]

The processor has absolutely nothing written on it, it looks pure silver on top. Is there any way to find out the model name? It's pretty old so I'm pretty sure my friend threw the original box away.

I googled these images but they should be right.

Underside of a socket 1155 http://www.guru3d.com/miraserver/ima...e/IMG_3314.jpg
Underside of a socket 1156 http://www.gameconnect.net/images/ne...ale_CPU_01.jpg

[Skeltons]

I googled these images but they should be right.

Underside of a socket 1155 http://www.guru3d.com/miraserver/ima...e/IMG_3314.jpg
Underside of a socket 1156 http://www.gameconnect.net/images/ne...ale_CPU_01.jpg

That was incredibly helpful, from those I can say that I have a 1155. What now? Does he have to get a new motherboard or a new processor?

[Grishnok]

The first thing you need to always check is if the memory is bad. Swap out some memory you know is good and if it works, then you know the problem. If putting in RAM you know works doesnt fix the issue, check to make sure all the hardware is connected tightly and properly. If still nothing, might have a bad board or VC.

[demonskies]

That was incredibly helpful, from those I can say that I have a 1155. What now? Does he have to get a new motherboard or a new processor?

If you have a p55/1156 motherboard and a 1155 socket processor you will need to replace your motherboard for the most benefit. It might have fit in the socket but its defiantely not getting the right connection lol.

[yurano]

That was incredibly helpful, from those I can say that I have a 1155. What now? Does he have to get a new motherboard or a new processor?

You have a 1155 CPU and a 1156 motherboard. You can go one of two ways: 1) Buy a 1155 motherboard or 2) buy a 1156 CPU. Since 1155 is newer and motherboards are cheaper, I recommend buying a 1155 motherboard.

http://www.newegg.com/Product/Produc...CE&PageSize=20