new graphics card was not working and not showing in device manager

[twotigers]

my desktop is HP Pavilion Desktop  TP01-1026. bought a few months ago.

recently I bought a GT 710 graphics card and install in the PCI express slot, ant then connect monitors to the new card, and turn on the computer. the monitors did not have any signals. 

Then I connected monitors to the intergated intel graphics card, then the monitors works.

I checked device manager, the graphics card did not show in device manager.

I updated BIOS and windows, new graphics card still not works. please help me solve this problem

I contact with HP online, they could not solve the problem and transferred me to HP smart friend service. then can call [removed] and talked with someone. he told me it is out of their knowledge and let me pay to get advance service team to solve the problems.  Kind of disappointment on the HP service. 

[banhien]

@twotigers 

New card should disable existing chip automatically buy the iGPU is still accessible. Machine has 180W of PSU, it is a little bit lower than its requirement but still should work.

Please update BIOS and re-install card properly.

Regards.

[twotigers]

thanks

I  JUST Update BIOS and put the graphics card in again. it still did not work. 

I also reset windows 10, it did not work. 

[twotigers]

I want to upgrade power supply to 450w, can you recommend some PSU? thanks