What has happened to my computer?

malwarebytes-safemode

go to c.net and get a free anti virus like avast or malwarebytes. Also get a program called CC Cleaner. Get the free version. It will clean all that crap. If it's still not gone after the anti virus scan and CC Cleaner then get Spybot Search and Destroy 2.0. That will get rid of any bad spyware. Lock your computer with a password. no more sharing.

go to c.net and get a free anti virus like avast or malwarebytes. Also get a program called CC Cleaner. Get the free version. It will clean all that crap. If it's still not gone after the anti virus scan and CC Cleaner then get Spybot Search and Destroy 2.0. That will get rid of any bad spyware. Lock your computer with a password. no more sharing.

You want a keylogger, just google one and install it.

Put a password on you PC.

@jannywing:

Reinstall Windows, set-up a password protected Administrator account that only you have access to, create him a limited user account that does not have a password. That way it will be much harder for him to run programs that can harm the computer. Install an antivirus like Avast. You could also look into parental control software that can further limit what he can do and possibly keep track of what he's doing.

Kaspersky has some free tools I think that save you out of deep doo doo.

Agree, go get Malwarebytes. May take several tries to clean out the Trojans, but it can clean it out.

He's clearly not trustworthy. Just don't let him use your computer.

Thank you so much. It really helps me a lot.

Well, I guess. After all, we share a room and I don't think it is good. I will talk to him. Thank you.

I found Micro keylogger in download.com but I'm not sure if it will help. http://goo.gl/O4KOOj

@GTR12: Don't you think there is so many ads while google searching...

install anykeylogger on your computer, then you can see what done by others.

what can it do?

1. Keystroke logging: able to record all keystrokes typed in the keyboard after the computer turns on.

2. Clipboard logging: all operations occurred in clipboard such as copy, paste, etc. can be captured.

3. Screenshots logging: able to snap screenshots based on the time intervals.

4. Applications logging: some keylogger software can record applications running on the computer with program name, time, etc.

5. chatting logging: Chat conversations sent to others in IM tools will be recorded, such as Skype, Adium, iChat, AIM, MSN.

6. websites visited logging: record all visited website information including time, titles of the visited pages, URLs and browser name.

7. parental control function:Block Websites, Block applications,Limit PC time,etc.

Is it legal?

Yes, when you install it you need to provider admin authorization and it passed by DC.