For a while now, my computer crashes randomly when playing games. Usually i hear a buzzing sound from the audio and the computer shuts off and turns back on, but recently with the game H1Z1 it doesn't make the buzzing sound. However, with city building games such as Sim city and Cities: Skylines, the audio continues as normal and i have shut off the computer. Games this is happening with include, Planetside 2, Archeage, Sim City, Cities Skylines, Guild wars 2 (during World v World), H1Z1, Etc.. Recently I cleaned the dust from my computer and it still happens, so I don't think it's because of that. however, recently whenever my computer turns on it opens the internet to a weird Russian website. If you need any more information, just ask.
Thanks For your help!
Update: My Graphics Card is updated By the Way
PC Specs:
Processor: AMD FX(tm)-6300 Six-core Processor 3.50 GHz
Ram: 8 Gb
64 Bit Windows 8
1.5 Tb Hard drive space
Thanks For your help!
Update: My Graphics Card is updated By the Way

PC Specs:
Processor: AMD FX(tm)-6300 Six-core Processor 3.50 GHz
Ram: 8 Gb
64 Bit Windows 8
1.5 Tb Hard drive space