Some things you didn't tell.
1. Did you install the drivers for the new card?
2. Did you go into the BIOS setup to disable the old on board card (that's not always automatically)?
3. Did you connect the monitor to the new card? Or is it still on the old VGA port (that might be automatically disabled)?
Only putting the card in a slot and doing nothing else isn't enough.
I am new in this forum . I am having a serious problem with my Hardware . Please feel free to answer with detail as i am a total noob in pc related probs
INTEL Pentium DUAL CPU
E2140 @ 1.60 GHz
0.99 GB of RAM
INTEL ON BOARD 82945G
HARD DISK 80 GB SATA
Prob : I slotted a GF XFX 8500 GT in my motherboard . But the Monitor Display is blank on bootup . Please help me what to do to let my 8500 GT work . Thank you