Crashes on large effects and weapon spawns

I guess I wasn’t alone for my computer crashes too, but I have pin-pointed it to when there is something large being loaded like the Nihilanth or when there is some large effect about to happen like the explosion from the large fireworks in the Garry’s Fireworks Collection 1.42 addon. It also crashes with select guns from the COD MW3 addon. I too have had my game crash even when trying to join servers like prop hunt. I have uninstalled all my addons, unsubscribed and ran with only fireworks and wiremod to see if it was any interference and still got the error. I can say that this didn’t happen until I upgraded to my new graphics card a MSI R9 270 GAMING 2GB 256-Bit GDDR5 HDCP Ready. I will now list my system specs:

System Specs:
Dell Inspiron 570
Processor: AMD Athlon(tm) II X4 630 Processor 2.80GHz
Memory: 6GB DDR3
Hard Drive: 1TB WD Performance Drive
Video Card: MSI R9 270 GAMING 2GB 256-Bit GDDR5
Operating System: Windows 7 64bit Home Premium

I will now put my crash logs, the first is the most recent which is the crash from the Nihilanth:

This crash log is to the explosion error that caused the crash:

Thanks in advance guys!

Are you running the latest graphics drivers and did you uninstall the drivers from your previous graphics card?

Thanks for the response! I didn’t have a graphics card prior, I also installed and updated the drivers after I installed my new card.