Motherboard will support your GPU, but I highly doubt that this low-quality 240W PSU will. 1050Ti is not very demanding in terms of power, but 240W is simply too low. You are using a branded prebuilt machine, right? (dell, hp...) They usually come with inadequate PSUs, which are usually custom made and you cannot simply upgrade them. On the other hand, 1030 will probably work just fine, it uses only 30W or so.