PC wont boot when i run my palit 4850 sonic card

[matt12343234]

hi there
my pc config is
Phenom II 940
Asus M3N78 EM
2 X 2 DDR2 800
2 X SATA HDD
Palit 4850 sonic
Tagan TG500 U37 PSU

my prob is that when i try to run my pc with my palit 4850 sonic gfx card...my pc wont boot...some people suggested me it could be due to psu so i even got a new tagan tg 500 u 37 psu but still the problem persists
my pc boots perfectly well when i run on onboard gfx
prob come only when i try to run the gfx card on my mb...most of the times it doenst boots
can any one please help me determining what the real prob could be

 

[matt12343234]

please anyone help me

 

[djbrad007]

In the bios, change to video order for PCI-E first.

It may still be on onboard, ignoring the PCI-E VGA.

Brad

 

[Euphoria_MK]

^^ +1

Yes the BIOS setting is set by default for primary display to use onboard video. You just have to switch this to PCI-E.

 

[matt12343234]

welll....i have run my gfx without any prob for almost 10 days.....this problem occoured recently.....and as far as i remembed....prefrence was set to PCI-E in bios

 

[matt12343234]

the prob is with booting....not display.....sometimes it does boots perfectly but most of the time it doesnt!

 

[Euphoria_MK]

Is your on-board video set to AUTO?
If it is set to auto just go and change the setting to disabled... I am not sure but it might make a difference.
In my BIOS I have it disabled.

 

[matt12343234]

yes it is disabled
but the thing is that the pc wont boot in the first place....

 

[Euphoria_MK]

Hmm it sound more like hardware conflict issue.

There are two thing you can try out.

1. Reset the BIOS to its default settings, than go to BIOS set priority to PCI-E and try booting like that.

2. Remove 4850 from mother board and power up the PC without the card in it, let the BIOS refresh and then power down the PC, insert the card back in and power up again.

The BIOS manages the IRQ assignment for any additional hardware you add, sometimes conflicts occur that can cause additional problems, like not being able to boot, or not receiving sound output, etc.

 

[matt12343234]

ya i have set priority to pci e
and as i said...without changin any settings....my pc does boots some times if i try to shut the pow off and then back on a few times....
when it doent boots all the fans and led are lit up even the gfx card fan is on....but i don get the beep that i normally get while booting