windows 7 restars after a while

[makis.PGibs]

Hello, everybody.
i have a problem with my OS windows 7. when i connect on the internet and start windows explorer or firefox after a while i get a windows dialog box that an error occured and the system must restart. and after a while i get a full system restart. i give you the report thaqt i get with removal tool from kaspersky and if possible im waiting for a help... thanks in advance.

[olejah]

Hello, please make log of Gmer