mohammedxsumani :
terry4536 :
The Vostro 260 isn't a good idea. The optiplex 390 is better but will require a low profile graphics card.
so should i return the one i have and get my money back or is there any other cheap prebuild system that can support that card
I replied to your PM. I included a Newegg page on Dell & HP pre-built systems for you to look at. Look for systems that include a PCI Express x 16 expansion slot (standard height) for your GTX 1050.
The Dell XPS that I linked should work for an example.
Note: Newegg may or may not be available in your country, but you can use that page to find a system. Then do a search for that system in your country.