Una buona sera a tutti,
è da qualche giorno che provando a fare la scansione con l'antivirus microsoft dopo un pò il pc si riavvia,sapete darmi una spiegazione e come risolvere ?
Grazie.

Prova a farla in modalità provvisoria,inoltre fai una scansione con Malwarebytes aggiornato e posta il log che rilascia.

Buona sera, eccomi a postare il log di malware

<?xml version="1.0" encoding="UTF-16"?>

-<mbam-log>


-<header>

<date>2014/06/24 09:02:23 +0200</date>

<logfile>mbam-log-2014-06-24 (09-01-31).xml</logfile>

<isadmin>yes</isadmin>

</header>


-<engine>

<version>2.00.2.1012</version>

<malware-database>v2014.06.24.03</malware-database>

<rootkit-database>v2014.06.23.02</rootkit-database>

<license>free</license>

<file-protection>disabled</file-protection>

<web-protection>disabled</web-protection>

<self-protection>disabled</self-protection>

</engine>


-<system>

<osversion>Windows 7 Service Pack 1</osversion>

<arch>x64</arch>

<username>franco</username>

<filesys>NTFS</filesys>

</system>


-<summary>

<type>threat</type>

<result>completed</result>

<objects>360864</objects>

<time>649</time>

<processes>0</processes>

<modules>0</modules>

<keys>6</keys>

<values>0</values>

<datas>0</datas>

<folders>0</folders>

<files>1</files>

<sectors>0</sectors>

</summary>


-<options>

<memory>enabled</memory>

<startup>enabled</startup>

<filesystem>enabled</filesystem>

<archives>enabled</archives>

<rootkits>disabled</rootkits>

<deeprootkit>disabled</deeprootkit>

<heuristics>enabled</heuristics>

<pup>warn</pup>

<pum>enabled</pum>

</options>


-<items>


-<key>

<path>HKLM\SOFTWARE\CLASSES\CLSID\{31AD400D-1B06-4E33-A59A-90C2C140CBA0}</path>

<vendor>PUP.Optional.QuickShare.A</vendor>

<action>none</action>

<hash>b88b057799e2ea4cbfd485f712f0e020</hash>

</key>


-<key>

<path>HKLM\SOFTWARE\CLASSES\IESmartBar.BHO</path>

<vendor>PUP.Optional.QuickShare.A</vendor>

<action>none</action>

<hash>b88b057799e2ea4cbfd485f712f0e020</hash>

</key>


-<key>

<path>HKLM\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\BROWSER HELPER OBJECTS\{31AD400D-1B06-4E33-A59A-90C2C140CBA0}</path>

<vendor>PUP.Optional.QuickShare.A</vendor>

<action>none</action>

<hash>b88b057799e2ea4cbfd485f712f0e020</hash>

</key>


-<key>

<path>HKLM\SOFTWARE\WOW6432NODE\CLASSES\IESmartBar.BHO</path>

<vendor>PUP.Optional.QuickShare.A</vendor>

<action>none</action>

<hash>b88b057799e2ea4cbfd485f712f0e020</hash>

</key>


-<key>

<path>HKLM\SOFTWARE\MICROSOFT\INTERNET EXPLORER\SEARCHSCOPES\{33BB0A4E-99AF-4226-BDF6-49120163DE86}</path>

<vendor>PUP.Optional.Qone8</vendor>

<action>none</action>

<hash>52f1bfbd4e2d42f4ba08e10c31d207f9</hash>

</key>


-<key>

<path>HKLM\SOFTWARE\WOW6432NODE\DataMngr</path>

<vendor>PUP.Optional.DataMangr.A</vendor>

<action>none</action>

<hash>93b009733348ad8939af6e3fe41eeb15</hash>

</key>


-<file>

<path>C:\Users\franco\AppData\Local\Temp\updatepackasc.exe</path>

<vendor>PUP.Optional.GameAd.A</vendor>

<action>none</action>

<hash>370c0b71a2d90531ef2ad3a63cc860a0</hash>

</file>

</items>

</mbam-log>