Hello I have bought computer 4 months ago and from start I have problems with pc crashing and then rebooting itself. Sometimes it crashes in 2 hours and sometimes after 2, 3 days of working. Three days ago I have install clean copy of win xp and again I have reboot after 30 hours. Here is the info: The computer has rebooted from a bugcheck. The bugcheck was: 0x10000050 (0xb4a4fc50, 0x00000000, 0xbf8113c3, 0x00000000). A dump was saved in: C:\WINDOWS\Minidump\Mini101506-01.dmp. I have also run memtest and have attached screen from memtest. Does that means that I have bad ram , is this 100% sure ? If yes, than I can reuturn pc to shop - guaranty. Thank you. Best regards.