Hdd support for p4m800 - EliteGroup P4M800-M7 Motherboard

this this site http://www.msi.com/product/mb/PM8M-V.html#?div=BIOS and upgrade your BIOS it may help.

your hdd is crash or may be problem on power supply connector and cord connector try to replace it.

I HAVE THE SAME PROBLEM, AND I RESOLVE IT CHANGIN A BULGING CAPACITOR NEAR THE PROCESSOR

see that the boot sequence is proper first u should keep cd//dvd then hdd

Can you hear an audio cd playing
May be a video/graphics or monitor problem
if you can hear fans and hdd running

Actually, do not care SMART or not, and the first problem cause the third one. The second problem, I think the 512MB was not compatiable with old one.

No, the size does not matter. When you state the motherboard does not see the SATA drive are you saying the bios does not list the SATA drive? You're 750GB drive is most likely SATA 2.0 / 3.00BG transfer rate.
The P4M800-M7 does support SATA but it does not support SATA 2.0. So what you need to do to get the drive to function at a lower speed. Set to run Ultra 100/133MHz. You'll need help to do this. Try this software for Seagate. It might work for Seagate.
http://www.samsung.com/global/business/hdd/faqView.do?b2b_bbs_msg_id=126&orderNum=2
I haven't the time to research Seagates site for simular software.
However you can look through Seagate. Again you want to lower the SATA drive speed to Ultra. The bios will than see the SATA & so will windows.
http://www.seagate.com/www/en-us/support/downloads/seatools

Good Luck!

Mike

download the demo of nero and use "back it up"

go to this site and download the manual,it will show you what you need to do.
http://www.nodevice.com/driver/P4M800-M7/get34672.html

good luck
Terry

Did you remove the components that you upgraded, and try adding them back one by one?

Will it give you a POST screen?

Does it Beep at boot time? If it is noisy try moving it to another room.

Describe the original components and then the ones that you upgraded in detail. This will allow us to better troubleshoot the problem.