Sound, internet and system restore doesn't work

[zait12]

So, I were told to scan my cousin's computer for viruses.

I installed Malwarebytes anti-malware and some other programs to scan her computer.

No program discovered anything but Malwarebytes did. It put a file into the quarantine, which I thought "if it's in the quarantine, better delete it" so I did.

Afterwards, (maybe after a reboot) her computer wouldn't work well.

The volume icon is showing the icon for being silent, when I click it I get a response that 'Ljudtjänsten körs inte' (audio service is not running).

In the log of the scan the only thing it found said;

upptäckta registervärden: 1

HKCU\SOFTWARE\Microsoft\Windows\Currentversion\Run|HKCU

(Backdoor.HMCPol.Gen) -> Data:

C:\Users\Matilda\Appdata\Roaming\Intel\taskmgr.exe -> Sattes i karantän och togs bort.

(discovered register values:1 )

(Put in quarantine and removed)

She is running Windows Vista Service Pack 1 x86 NTFS

Microsoft Windows [Version 6.0.6001]

I were thinking to use a system restore, but when I ran rstrui.exe I got the message:

'Tjänsten Volume Shadow Copy som används av Systemåterställning fungerar inte. Mer information finns i händelseloggen. (0x81000202)'

(Volume Shadow Copy Service used by System Restore does not work. For more information, see the event log.(0x81000202))

I tried running SFC/SCANNOW in the CMD window but got:

'Det gick inte att starta reparationstjänsten'

('Could not start the repair service')

I do not have a Windows Vista CD.

Is there anything I can do to save the computer or is the only thing that can be done to move the files to an external hdd then reinstall Windows?

I would be grateful for an answer!

[AdvancedSetup]

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