Various BSOD errors - Please help

I got my Alienware 15 r3 about two weeks ago and ive had nothing but problems with it while gaming. Ive had constant problems with BSODs such as memory management, APC index mismatch, interrupt exception not handled, IQRL not less or equal, system service exception, system thread exception not handled, page fault in nonpaged area, kmode exception not handled, and kernel security check failure. ive updated every driver in the device manager, checked my memory with /scannow and chkdsk, gone through the dell diagnostics program multiple times with nothing coming up, and reset my computer using both options. if anyone has any idea what to do the help would be much appreciated