Dell Vostro PP37L laptop hangs after booting

Respected sir/madam,

                                            sir i have dell vostro pp37l model laptop. it goes in hang after booting. i have installed windows 7 32 bit professional. following is the log inforgamation which is genrated after reboot the laptop.

Log Name:      System
Source:        Service Control Manager
Date:          7/9/2015 10:01:42 AM
Event ID:      7001
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      Prachi-pc
Description:
The Network Location Awareness service depends on the Network Store Interface Service service which failed to start because of the following error:
The dependency service or group failed to start.
Event Xml:
<Event xmlns="schemas.microsoft.com/.../event">
  <System>
    <Provider Name="Service Control Manager" Guid="{555908d1-a6d7-4695-8e1e-26931d2012f4}" EventSourceName="Service Control Manager" />
    <EventID Qualifiers="49152">7001</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8080000000000000</Keywords>
    <TimeCreated SystemTime="2015-07-09T04:31:42.170869700Z" />
    <EventRecordID>71479</EventRecordID>
    <Correlation />
    <Execution ProcessID="432" ThreadID="436" />
    <Channel>System</Channel>
    <Computer>Prachi-pc</Computer>
    <Security />
  </System>
  <EventData>
    <Data Name="param1">Network Location Awareness</Data>
    <Data Name="param2">Network Store Interface Service</Data>
    <Data Name="param3">%%1068</Data>
  </EventData>
</Event>

please give me solution as early as possible.

sorry for bad english

Thanks in advance