BSOD right after login error 0x7f caused by ntoskrnl.exe+7efc0

RobbieLeMLG said:

Nevermind, crashed after a while, but disabling all the start programs seems do have made a difference.

That's good. :)

If the crash on skype continues, we will consult a skype expert, ok? :)

Proceed .... :)

RobbieLeMLG said:

Different versions of the ntoskrnl.exe+9a6b8/7e569/8b5c8/355284

RobbieLeMLG, what we need here is the files/information as per the Blue Screen of Death (BSOD) Posting Instructions.

Uninstall Super AntiSpyware. Uninstall Avast, too. Use Microsoft Security Essentials as your antivirus with windows inbuilt firewall, and free MBAM as the on demand scanner.

Download and install those, and then run full system scans with both of them, one by one.

A device driver is not causing the crashes. Then, it comes the AV programs.

And, just asking, are you overclocking? If so, get back to default.

OK ... let us know if anything changed after Applying the aforesaid changes :)