Computer running slow help?

ok heres the deal thanks to the stupid computer guy not coming i thought id take matter into my own hands and update the drivers on my computer however it backfired and now my computer is going really slow any advice on what to do ...i think i need to get some drivers but i have all the ones off nvidia but it's... show more ok heres the deal thanks to the stupid computer guy not coming i thought id take matter into my own hands and update the drivers on my computer however it backfired and now my computer is going really slow any advice on what to do ...i think i need to get some drivers but i have all the ones off nvidia but it's still going slow plus how do i check my graphics card now? this is way to much for a 14 year old right?
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