at first, sorry for my bad english :P
a few days ago i started getting BSOD's I dont know what causes the problem and i would be very grateful if somebody could help me.
thank you.
You have given me four reports. Three were vague, but lead me to believe that the cause was hardware related. The fourth indicates that it may be a memory problem (which is considered hardware) Lets start there.
You are also using some sort of virtualization software. The driver SPTD is known to cause BSODs Please remove any CD virtualization programs such as Daemon Tools and Alcohol 120%. They use a driver, found in your dmp, sptd.sys, that is notorious for causing BSODs. Use this SPTD uninstaller when you're done: http://www.duplexsecure.com/en/faq
Update your antivirus and run a full scan Download and run a full scan with malwarebytes.