building my First Pc and i have a problem i installed everything perfectly ( to the best of my knowledge) but when i try to boot up the computer i get no signal display and when i try to shut down the computer by pressing and holding the power button it does not power down anyone has any ideas as what could be the problem
Mind you, there are two ways to do this: you can do it either in or out of the case. The advantages and drawbacks:in the case is easier and faster, but will not find case-related problems, like shorts from extra, mispositioned standoffs, or ground plane problems; out of the case takes longer, and you may run into 'reach' problems - power supply cables and front panel power switch headers may not be long enough; for the power supply, it's usually just a matter of removing four screws to temorarily relocate it; for the power switch, you can just do this (carefully):
You only need to short the pins momentarily - that's all the power switch does...Out of the case also affords you an easy opportunity to 'flip' the board to check your heatsink/fan attachment setup, to be sure all the pins are fully seated, locked, and not cracked... If you do the out of the case, you need to lay the board on a non-conductive surface: the box the MOBO came in is ideal; but - the foam pad it came with, and the bag it was in are not - being 'antistat', they are somewhat conductive, and may induce problems...
Another item worth mention at this point is case speakers: if you haven't got one - get one! http://www.cwc-group.com/casp.html
A lot of people operate under the misaprehension that the 'diagnostic beeps' should come through the speakers attached to their sound-card/chip - not so! Your three hundred dollar Altec-Lansings won't do you any good here - you have to have a case speaker attached to the front panel header, and, often by this point, it's the only diagnostic info you'll have to go on...
The standard 'strip-down':
Power down at PSU switch
CPU and heatsink/fan (check carefully that the fan retaining pins are fully inserted, completely locked, and not cracked)
one stick of RAM, in slot closest to CPU
video card and monitor connector (if more than one PCIe slot, again, in slot closest to CPU)
all power plugs - 20+4 or 24, 2x2 or 2x4 ATX power, graphics card power
case speaker and power switch connectors
keyboard (don't need a mouse at this point)
place jumper on RST_CMOS pins
remove jumper from RST_CMOS pins
power up at PSU switch
power up by depressing case power switch (or shorting the 'power' pins...)
If you get video, enter BIOS with <DEL> (may need a <TAB> to get to POST screen, if 'splash' screen is enabled)
Select and execute "Load Optimized Defaults" - save and exit, reboot
reinsert other components, one at a time, testing each time after addition...
It's really how every build should start; you lay the basic components out on a nice, easy to navigate and reach, flat surface, you put your board on an insulator (I keep a 12½" by 13½" piece of lexan around, just for this - as I never do anything bigger than eATX ) and you assemble 'the basics' to get a boot. This is a great time to add a DVD as boot drive, and run MemTest86+, and, if you're planning on overclocking, either CPU or RAM, to 'characterize' them, and see how far they'll 'push'! If you have to run individual sticks to look for bad ones, or 'shuffle 'em around' to optimize slot useage, it's so much easier to do it at this point, with everything 'flat in front of you'
Then, you 'transfer' it to the case - stilljust the basics; if it boots OK, you're good to start adding parts - if not, you know that the problem is something simple in your install - an extra standoff, a misplaced front panel header - and it's infinitely easier to find if you haven't hooked up two or three dozen pieces to 'fiddle through'! Then add things one or two at a time, boot, check - is it OK? If not, what did I just add? What could I have done wrong at that step??! You're gonna live with this thing for some time - definitely not the place to be in a hurry