General information

Make the title of the post as relevant as possible. Titles like "weird problem" or "fucking computer" are less helpful than "bluescreen problem" or "suspected virus"
Give as much information as possible about your problem and whatever steps you've taken so far to solve it. If you miss this, time may be spent waiting for advice you've already done.
If it's a purchaseding question, be sure to give the specifications of what you want and a budget.
If errorz are given please writen them down exactly, including all fiddly numbers, letters and CDC's.

Suspected malware/virus/etc

Do a virus scan! http://www.5punk.co.uk/phpbb/viewtopic.php?t=884 is still relevant.
wait 5 minutes after booting, then go to a command prompt and type

tasklist /V >C:\tasklist.txt

then show us the textfile created on your C drive called tasklist.txt. It helps to put it in [code] and [/code] tags for readability on the forums.

Download HijackThis and run it, it's slef installing.
- Click the button labeled Do a system scan and save a logfile.
- HijackThis will quickly scan your system, and then open two new windows. The results of the HijackThis scan, and hijackthis.log in Notepad. Save hijackthis.log. By default it will be saved to C:\HijackThis, or you can chose “Save As…”, and save to another location.
- Hijackthis.log contains the info that’s required to receive analysis and assistance. Highlight the entire contents. Copy and paste the contents into your post, along with a complete description of your problem(s).(again put it in [code] and [/code] tags for readability) DO NOT fix anything. Wait for help.