Computer will not boot or post

Hi All,
Setting up this new rig for my friend.
MSI Neo 875P-FIS2R
MSI GForce 4-TI4200
1 Gig GB-Micro Ram
1 SATA 120 Gig Drive
P4 2.8C HT
2 PATA Drive
1 CD-RW
400W PS
Even with all the device not on the board just ram, video, cpu and fan the system boots like the fan is spinning and stuff but nothing goes on the screen. Both power supply cables are pluged into the board.
Even if I don't plug the pw switch cable to the board it still starts when the power supply is turned out. Shoudn't it stay off till the power swich is pressed? Even if I hold down the power switch for 3 seconds to shut down it still seems to just restart.
ALso the usb with with the 4 lights all show green but they never change ever. We also tried an ati 9600 card, different ram, different cpu P4 2.4, and cleared the cmos several times.
I would be very happy at this point to even see the post screen. But nothing happends on the monitor at all
Any help would be really great.
Thanks all,
Marc

yes and no
you can test if your cpu will boot in another mobo that is the same socket and supports your processor even if the mobo doesnt support HT. to test the HT portion of it tho, you will need to install and enable HT.
if you can get your hands on a test machine, it would definately be a good thing. you could run isolation tests. test your cpu in other motherboard. test another cpu in this mobo. if your cpu works ok in other mobo, cpu is prolly fine. if cpu doesnt work, you may have cpu issues. if another cpu doesnt work in your mobo and your cpu works in another mobo, it is prolly a mobo, ram, vid issue. try swaping vid cards next. then ram. repeat till you find the once piece that doesnt work for either system.

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Computer will not boot or post

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