Hi and welcome to the Daniweb forums :).
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Can you please do the following.
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Can you disable Windows Defender as it may interfere with the removal process. Please leave it disabled until your PC has been given the all clear.Open Windows Defender
Click Tools
Click General Settings
Scroll down to Real Time Protection Options
Uncheck Turn on Real Time Protection (recommended)
After you uncheck this, click on the Save button
Close Windows Defender
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Scan with HijackThis and then place a check next to all the following, if present:
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = about:blank
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyServer = http=127.0.0.1:6522
O2 - BHO: (no name) - {EC20DE58-83C9-5980-8436-22B66E2CC49A} - c:\windows\system32\dqxavfpt.dll (file missing)
O2 - BHO: SWEETIE - {EEE6C35C-6118-11DC-9C72-001320C79847} - C:\Program Files\SweetIM\Toolbars\Internet Explorer\mgToolbarIE.dll (file missing)
O3 - Toolbar: SweetIM Toolbar for Internet Explorer - {EEE6C35B-6118-11DC-9C72-001320C79847} - C:\Program Files\SweetIM\Toolbars\Internet Explorer\mgToolbarIE.dll (file missing)
O4 - HKCU\..\Run: [Jnekivokituba] rundll32.exe "C:\Users\Parath\AppData\Local\BDAZ1ac.dll",Startup
O4 - Global Startup: BTTray.lnk = ?
O4 - Global Startup: hp psc 1000 series.lnk = ?
O4 - Global Startup: hpoddt01.exe.lnk = ?
Now, close all instances of Internet Explorer and any other windows you have open except HiJackThis, click "Fix checked".
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Reboot.
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There are signs of infection there so I would advise you to also do the following;