AVG turning off computer

AVG Performance
4

Hello Bren. Please reinstall your program and check if you are able to resolve the issue. Thank you. Kishore, AVG Customer Care.

1

How do I stop AVG from turning off my wife's computer after it is inactive for a while? The event log is copied below.

Log Name:      System
Source:        USER32
Date:          7/17/2015 1:17:37 AM
Event ID:      1074
Task Category: None
Level:         Information
Keywords:      Classic
User:          SYSTEM
Computer:      Helen1111-PC
Description:
The process C:\Program Files\AVG\AVG2015\avgwdsvc.exe (HELEN1111-PC) has initiated the shutdown of computer HELEN1111-PC on behalf of user NT AUTHORITY\SYSTEM for the following reason: Other (Planned)
 Reason Code: 0x80000000
 Shutdown Type: shutdown
 Comment: AVG shutdown
Event Xml:
<Event xmlns="Error
  <System>
    <Provider Name="USER32" />
    <EventID Qualifiers="32768">1074</EventID>
    <Level>4</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2015-07-17T08:17:37.000000000Z" />
    <EventRecordID>150174</EventRecordID>
    <Channel>System</Channel>
    <Computer>Helen1111-PC</Computer>
    <Security UserID="S-1-5-18" />
  </System>
  <EventData>
    <Data>C:\Program Files\AVG\AVG2015\avgwdsvc.exe (HELEN1111-PC)</Data>
    <Data>HELEN1111-PC</Data>
    <Data>Other (Planned)</Data>
    <Data>0x80000000</Data>
    <Data>shutdown</Data>
    <Data>AVG shutdown</Data>
    <Data>NT AUTHORITY\SYSTEM</Data>
    <Binary>0000008000000000000000000000000000000000000000000000000000000000</Binary>
  </EventData>
</Event>

3

Hello Bren. Please reinstall your program and check if you are able to resolve the issue. Thank you. Kishore, AVG Customer Care.

2

Hi Bren,
If reinsntallation didn't help you on this issue can you please check registry key described in http://support.avg.com/SupportArticleView?urlname=AVG-Free-repeatedly-asks-for-restart-after-upgrade-to-AVG-Free-2014 use Avg2015 instead of  Avg2014.
Thanks