Hello

A few days ago my computer went wierd.

I cannot update windows because I get no results when I use "Windows Search"

My metro UI doesnt work properly. I cannot use it. 

Somebody said that it could be that my User Account could be corrupted.

I tried to create I new one, but I could do the first steps, because the computer doesnt respond when I click "Change my account" in controlpanel.

I get errorlogs like this:

Loggnamn:      Application
Klla:         Microsoft-Windows-User Profiles Service
Datum:         2015-04-29 12:03:16
Hndelse-ID:   1542
Aktivitetskategori:Ingen
Niv:          Fel
Nyckelord:     
Anvndare:     SYSTEM
Dator:         Baddarn
Beskrivning:
Det gr inte att lsa in registerfilen fr klasser.
 INFORMATION - The system cannot find the file specified.

Hndelsens XML-data:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-User Profiles Service" Guid="{89B1E9F0-5AFF-44A6-9B44-0A07A7CE5845}" />
    <EventID>1542</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000000000000000</Keywords>
    <TimeCreated SystemTime="2015-04-29T10:03:16.571099200Z" />
    <EventRecordID>91382</EventRecordID>
    <Correlation />
    <Execution ProcessID="1128" ThreadID="2524" />
    <Channel>Application</Channel>
    <Computer>Baddarn</Computer>
    <Security UserID="S-1-5-18" />
  </System>
  <EventData>
    <Data Name="Error">The system cannot find the file specified.
</Data>
  </EventData>
</Event>

What can I do?

Hi Intesabra,

Have you made any modifications to the machine before the issue?
First of all ,I would suggest you to update the machine manually.
Control Panel\All Control Panel Items\Windows Update\Check for updates.

I also suggest you to perform a full scan with the antivirus software to eliminate the virus issue considering this issue is a little wierd. We can do this in safe mode to improve the scanning quality.

Run "services.msc" to check the status of "User Profiles Service" and ensure it is running.
Run "dism /online /cleanup-image /restorehealth" or "sfc /scannow" to check the health of the whole system files.

Considering this issue occurred recently, we can perform a system restore to recover the machine to a previous point.

Best regards