|Are you SURE the cpu you are using is supported by the mboard model? Did you check the cpu comptibility list for the mboard model.|
Are you SURE the ram you are trying to use can be used with this mboard? Did you use the mboard model to search for ram that is compatible with this mboard model ?.
Are you SURE you have connected all required connections from the power supply to the mboard, and to the video card in a slot if you have one and it has a power socket on the card ?
A new hard drive, or a used hard drive that has been wiped of data, has no data on it. An operating system must be installed on the hard drive before the computer's bios can recognize the hard drive as being bootable. If you boot the computer with a Windows CD or DVD, or the first disk in a Recovery disk set for the specific brand name model, the hard drive will be bootable after the operating system or the Recovery disk set has installed it's software. You do not have to software partition / format a hard drive beforehand if the operating system is 2000 or later - you / Setup can do that when you boot with the OS disk.
However, if nothing else is wrong, you should still get video from the monitor if it is plugged into a video port that is producing video while the computer is running, even when the hard drive has no data or no hard drive has been installed.
If your computer has both onboard video - video built into the mboard - and a video card in a slot, almost always, installing a video card in an AGP or PCI-E X16 slot automatically disables the onboard video, so there will be no video if you connect the monitor to the port for onboard video.
You could try the monitor with another computer, but there's probably nothing wrong with it.
If you are sure the monitor is plugged into a video port that should produce video
- the computer should beep once while booting if nothing is wrong, indicating the POST (Power On Self Test) has completed successfully. There must be a computer case speaker connected to certain pins on the mboard, or an accessory speaker device that came with the mboard must be connected to certain pins on the mboard, or there must be a built in sound device on the mboard (rare for modern mboards), or, rarely, some mboards have no such pins or onboard device and you must connect amplified speakers to the green onboard sound port and have the speakers powered and on, in order for you to be able to hear mboard beeps.
- if you DO have a speaker or speaker device hooked up so you can hear mboard beeps, and you hear no beeps while booting.....
- you may have a ram problem. Incompatible ram, or ram that has a poor connection in the ram slots, can cause no beeps, no boot, no video.
It is easy to test for incompatible ram or a ram connection problem that has caused your mboard to fail to boot / no video.
Make sure you have a speaker or speakers or the equivalent connected to the mboard so you can hear mboard beeps (see your mboard manual if you need to).
Remove the AC power to the case/power supply.
Remove all the ram.
Restore AC power.
Try to boot.
If nothing else is wrong, you will get no video but you will hear a pattern of beeps that indicate no ram is installed, or a ram problem.
E.g. for an Award bios or a bios based on one, that's often a beep of about a half second, silence for a half second, a beep of about a half second, silence for a half second, continuously.
See response 2 in this - try cleaning the contacts on the ram modules, and making sure the modules are properly seated:
For a laptop, or netbook, you must remove both its main battery and AC adapter before you do that.
For a brand name computer, see the Owner's or User's manual if you need to - how to remove or replace the ram is usually in that - it may already be in your installed programs. If you can't get into Windows, it may be on a disk that came with the computer, or you can go online and look at it or download it - it's in the downloads for your specific model.
For a generic desktop computer, see the mboard manual if you need to - how to remove or replace the ram is usually in that.