First this is a AMD Forum. You need to ask this question at Nvidia Forum here : https://forums.geforce.com/default/board/33/geforce-drivers/ concerning GPU problems with a GTX 750ti.
It seems like your Motherboard has Integrated AMD HD 3000 graphics. Do you have in BIOS settings to have your Discrete GPU (GTX 750ti) card to boot up first rather than the Integrated Graphics? Make sure your monitor cables are connected to the GTX GPU card and not the Motherboard's Integrated Graphics port and in BIOS your settings are for the GTX GPU card to boot first.
Check for a BIOS update as some boxes do not properly recognize the discrete card as primary