I put the memtest on a USB drive, but when i reboot and select boot from usb it says ''Operating system not found'' and then continues to windows 7 start up screen,
Now some days passed and seems that the bsod increases time by time, it even happened directly after the user-login panel of windows..
I noticed that it happens more often when I use a lot of programs at the same time, f.e yesterday i connected my phone on my pc and when i wanted to synchronize the files, the bsod appeared again..again and again.
However i did the windows memory test, and no errors were found
Last thing that took my attention was the fact that after a BSOD the laptop rebooted and said that it could not find the OS, so i closed the laptop and turned it on again, and it worked again.It looks like the pc is working really well until Windows starts..
so mayb it has something to do with windows?
I managed to make the memorytest work, so far so good. Il post the results after 6 hours, when i did 7 tries.thank you.