[SOLVED] Help me upgrade

minetom5841

Commendable
Sep 2, 2017
23
1
1,515
I have a HP pavilion p6-2388ea Desktop PC. The specs are: https://support.hp.com/gb-en/document/c03533207.
I also have a GTX 770 Twin Frozr Laying around. What would be the easiest and cheapest way to use the 770 with my PC?
The 770 fits the case as I have already tried.
I have previously tried to install a bigger PSU and the GPU but ran into some problems because I couldn't use the 770 so I returned the new PSU and gave up.
I'm sure it's possible but I was wondering if there is any other method that would be easier such as using the GPU externally? I don't have much experience so sorry if I sound like a noob :).