Graphics card & usb peripherals problems

[jet]

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mga boss, naa ko problema.

my video card is GTX460. Running on windows 7 64bit.

for some ODD reason, if i remove my usb keyboard, my video input will be gone. mawala. ang error kay "no video input".
sometimes if lain usb peripherals ako i.remove - external HDD, usb mouse, gamepad controllers, mawala sad ako video.... pero not always. BUT as in the case of my keyboard, it is always!
let's say... 80% usb keyboard and 20% other usb peripherals if ma remove... ma wala ako video input
this only works in the back usb ports sa PC, directly connected sa mobo.

all ports at the front of my PC have no problems.

sidenote: now considering everything is plugged in. normal devices plugged in their respective ports.
my startup has no display. the one with the BIOS part.
but you know it boots cuz the mobo beeps and the windows 7 startup sound mu tingog.
here's the weird part, it only displays right after the windows 7 blue welcome page comes.
at the BIOS part, no video...

if i remove my video card, and use my onboard graphics, ok ra tanan. no prob.

i am at wit's end aning problema.. googled it myself a lot of times but still no solution. the closest thing i've found is IRQ conflicts stuff. but i'm not familiar with this..
soo... unsaon nani?

[werty]

unsay mobo brand model? power supply used?

[LordZhen]

use, onboard graphics for you to get into your bios, and set the gpu output to legacy

[jet]

nara bro. ako nlng sad i apil tanan specs just in case.

AsRock N68C-S UCC
Silverstone Strider 500W
Athlon II X4 640
Inno3d GTX460 1gb
Corsair Vengeance ddr3 1600 4gb x 2
== usb peripherals (mao ni tanan naka pasok sa ako usb ports sa luyo)
A4tech KLS-40
Dragunov mouse
WD External 1 TB
Xbox 360 wireless controller
generic gamepad controller

[werty]

bag-o assemble ni? i would recheck mounting sa mobo, butangan insulator iya tiil if possible. check pud walay luag connection, especially power cables. dapat sure na haum and walay signs of burns.

[jet]

salamat mga bro LordZhen and werty. suwayon ni nako inyong advices but after na mahuman dl akong torrent. heheh will update nia

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dli na bago assemble bro.. sauna ranang problemaha! hahah
nabalik lang karon kay bago man ko palit xbox controller. nia gi arrange nako ports sa luyo nia ni tukar nasad. pastilan. hahha

use, onboard graphics for you to get into your bios, and set the gpu output to legacy

unsa pasabot anang legacy bro?

[mourneblade00]

hmmmmmm.....

[butitoy]

if bag-o pa na

pailisi na ang board