Slow boot time (~90 seconds) - Plug and Play delay

[vlada903]

I have recently installed Windows 7 over Windows 10 (I didn't really like it) and I have a boot-time problem now. Windows always gets stuck on "Starting Windows" screen and it takes up to 90 seconds to load the login screen. I looked it up in the event viewer and found out that there is a delay of 75 seconds between two events on the list.

(1) Information 24.7.2016 23:45:15 Service Control Manager 7036 None
(2) Information 24.7.2016 23:44:00 Kernel-Processor-Power 26 (4)

The first one (1) says:
The Plug and Play service entered the running state.

And the second (2) one:
Processor 3 in group 0 exposes the following:
2 idle state(s)
5 performance state(s)
0 throttle state(s)

(detailed info at the end)


All the drivers are from the original CD/Website and are up-to-date. I had no such problems when I was running Windows 10 or any other operating system.
The laptop is Lenovo Z50-75 --- AMD A10 7300, 8GB RAM, 5400rpm 500GB+8GB SSHD and Dual-Graphics AMD Radeon R6 and M255.


_______________________________________________________________________

DETAILS:


Log Name: System
Source: Service Control Manager
Date: 24.7.2016 23:45:15
Event ID: 7036
Task Category: None
Level: Information
Keywords: Classic
User: N/A
Computer: Vladimir-PC
Description:
The Plug and Play service entered the running state.
Event Xml:

<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Service Control Manager" Guid="{555908d1-a6d7-4695-8e1e-26931d2012f4}" EventSourceName="Service Control Manager" />
    <EventID Qualifiers="16384">7036</EventID>
    <Version>0</Version>
    <Level>4</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8080000000000000</Keywords>
    <TimeCreated SystemTime="2016-07-24T21:45:15.771347000Z" />
    <EventRecordID>4616</EventRecordID>
    <Correlation />
    <Execution ProcessID="664" ThreadID="804" />
    <Channel>System</Channel>
    <Computer>Vladimir-PC</Computer>
    <Security />
  </System>
  <EventData>
    <Data Name="param1">Plug and Play</Data>
    <Data Name="param2">running</Data>
    <Binary>50006C007500670050006C00610079002F0034000000</Binary>
  </EventData>
</Event>

Log Name: System
Source: Microsoft-Windows-Kernel-Processor-Power
Date: 24.7.2016 23:44:00
Event ID: 26
Task Category: (4)
Level: Information
Keywords:
User: SYSTEM
Computer: Vladimir-PC
Description:
Processor 3 in group 0 exposes the following:

2 idle state(s)
5 performance state(s)
0 throttle state(s)
Event Xml:

<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-Kernel-Processor-Power" Guid="{0F67E49F-FE51-4E9F-B490-6F2948CC6027}" />
    <EventID>26</EventID>
    <Version>0</Version>
    <Level>4</Level>
    <Task>4</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000000000000000</Keywords>
    <TimeCreated SystemTime="2016-07-24T21:44:00.298415400Z" />
    <EventRecordID>4615</EventRecordID>
    <Correlation />
    <Execution ProcessID="4" ThreadID="44" />
    <Channel>System</Channel>
    <Computer>Vladimir-PC</Computer>
    <Security UserID="S-1-5-18" />
  </System>
  <EventData>
    <Data Name="Group">0</Data>
    <Data Name="Number">3</Data>
    <Data Name="IdleStateCount">2</Data>
    <Data Name="PerfStateCount">5</Data>
    <Data Name="ThrottleStateCount">0</Data>
    <ComplexData Name="IdleState">0102</ComplexData>
    <ComplexData Name="PerfState">6C07000064000000080700005E000000DC0500004E000000B00400003F0000004C04000039000000</ComplexData>
  </EventData>
</Event>

What can be the problem?

 

[wpgwpg]

Check Device Manager for entries with ! or ? next to them, indicating driver problems.

 

[vlada903]

Check Device Manager for entries with ! or ? next to them, indicating driver problems.

No such problems in the Device Manager. I've already updated all the drivers.