Hello kimju,
I will need you to run some diagnostic scans to post info here first. That way I can assess the situation and start providing specific repairs steps.
To keep them from interfering with the repairs, be sure to temporarily disable all antivirus/anti-spyware softwares while these steps are being completed. This can usually be done through right clicking the software's Taskbar icons, or accessing each software through Start - Programs.
Download
RSIT (random's system information tool) from
here to your desktop, then click on the
RSIT.exe to start the scan.
If necessary allow it to locate or download a copy of HijackThis as needed.
Once the scan completes a textbox will open - copy/paste those contents here for review please. The log can also be found at C:\rsit\log.txt.
RSIT will also create a second log, info.txt, which will be minimized to your taskbar. Post that here as well please (it will also be stored at C:\rsit\info.txt).
You can break logs into parts and use separate posts here when replying and posting the log files, if needed.
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Also click
here and download the installer for Gmer to your desktop, then click that file to run Gmer.
If on it's opening scan Gmer locates items shown in red or indicates "
hidden" or "
rootkit", stop there, and click on the Copy button and rightclick on your Desktop, choose "New" > Text document. Once the file is created, open it and rightclick again and choose Paste. Copy the information and post it here please. We don't want any crashes just from taking an initial look at things.
If not, then click on
Scan (before scanning, make sure all other running programs are closed and no other actions like a scheduled antivirus scan will occur while this scan completes. Also do not use your computer during the scan).
When completed, click on the Copy button and rightclick on your Desktop, choose "New" > Text document. Once the file is created, open it and rightclick again and choose Paste. Copy the information and post it here please.