Lenovo H320 Bios

Hi
First off for the people who say that I have a pre-built PC with a small case and insufficient power supply, I swapped out my case for a bigger one and changed my PSU to the XFX PRO Core edition 550w.
I have been really stressed lately trying to get my god damn R9 270X to display, tried everything. Power supply is sufficient however, I tested my old card and new card. I uninstalled the GT 640 (+ 337.88 Driver) and then installed my R9 270X, No display, the PC wasn't posting or booting into Windows which makes me think it is a bios update issue. But that is the thing, where would I get the BIOS update? I am running Windows 7.
Please help ASAP!
Thanks.
  1. Lenovo Bios Update Utility
  2. Lenovo H320 Bios Update
Lenovo H320 Bios
  1. Understand BIOS. Pressing F1 to enter your Lenovo BIOS will take you to the Main Menu of your Setup Utility. From here, you can view information on the BIOS version on your Lenovo. The Setup Utility allows you to configure your Lenovo hardware, adjust the system date and time, and configure the security options on your Lenovo hardware.
  2. Hello, I just recently bought a new Lenovo H320 mainly for academic related things, but I was also planning to play 3D games w/ it, such as League of Legends. Much to my surprise, when I played.

Lenovo Bios Update Utility

H330 Desktop (Lenovo) Please Select. Back Windows 7 (64-bit).

Bios

Lenovo H320 Bios Update

RandomDudeThatRan

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Hello,
I just recently bought a new Lenovo H320 mainly for academic related things, but I was also planning to play 3D games w/ it, such as League of Legends. Much to my surprise, when I played the game, I only ran it with a max of 6 FPS. I'm no computer expert, so I don't know how to overclock, etc. Hell, I don't even know how to upgrade PCs. But is there a chance that I can upgrade this computer by replacing its GPU and fan? I'm not too sure if there are ones that can fit inside the H320. But if there are, since my PC is new and all, can I open up its case without voiding any warranties? If Yes is the answer to both questions, are there any guides out there that can easily teach me how to upgrade prebuilt computers? It would be great if I can get these questions answered.
But long story short, my questions are, in order:
1. Can I open up the H320's case without voiding any warranties?
2. Is there a GPU and Fan that can be upgraded to the H320 that will let me play games, such as League of Legends, that will give me a decent FPS, enough to not be frustrated by its low-end graphics and speed?
3: Any guides out there that can easily teach a person how to upgrade a prebuilt PC?
Also, will any upgrading to the PC affect its already incredible speed (at least for me)?
Thanks so much in advance!
P.S Just in case you're wondering, I cannot return this to the shop because of several reasons. Thanks!