after i reformatted my computer, my PC wasn't detecting my Nvidia card(GeForce 5200)
so can anybody help me?

Dani AI

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As described, the card stopped being detected after a reformat. and correctly pointed toward drivers, but when driver install alone does not restore detection, a few deeper checks are useful.

Common diagnostic steps include inspecting Device Manager (devmgmt.msc). If the adapter appears as "Standard VGA" or as an unknown device, Windows is using a generic driver or lacks the vendor driver. If no display adapter entry appears at all, the problem is more likely hardware or BIOS-level. Check BIOS settings for any onboard-video or primary-display option that might be set to integrated graphics, and verify the card is firmly seated (power off and ground yourself before handling).

When the device is present but drivers fail, gather the adapter Hardware Ids from Device Manager -> Properties -> Details -> Hardware Ids; those VEN/DEV values help find the exact legacy driver. Also install or update motherboard chipset drivers and relevant Windows updates/service packs first, since bus drivers can affect PCI/AGP enumeration. If a failed install left fragments, remove video drivers in Safe Mode before retrying or use a cleanup utility as a last resort.

If Windows never sees the board after the above, isolate the fault: test the GeForce 5200 in a different machine or try a known-good card in the original PC. Verify the power supply and slot condition. Update the motherboard BIOS only if the vendor recommends it and follow their instructions exactly. If the card works in another system but not in this one, the motherboard slot or firmware is suspect; if it fails everywhere, the GPU hardware is likely bad.

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Have you installed the drivers?

after i reformatted my computer, my PC wasn't detecting my Nvidia card(GeForce 5200)
so can anybody help me?

As Hughv stated if you haven't installed the drivers you need them - by default Windows generally does not ship with OEM video card drivers - you can find the drivers you need here
http://www.nvidia.com/Download/index.aspx?lang=en-us
Download and install the appropriate drivers for your video card

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