Monitors Dell 27 ultra sharp not getting detected on windows pc

Hello guys got a new dell 27 ultra sharp thunderbolt monitor to connect to my pc config 10400 i5 tried with hdmi dp direct the motherboard no signal detected do i need a gpu for display since its a 2k display or normal motherboard supports 27 inch monitor
Need help

Fenix said:

Did you test the monitor with a laptop or any other device ?

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nope dont have any laptop to check