When you say "just got my cpu back", exactly what do you mean?
Was it out being repaired or ?
Have you checked the monitor's cable and connection to the computer?
By "updates" are you taking about SP1 and SP2 which are critical updates and absolutely necessary to have?
If you are, you have a malware infection. The critical updates do not cause problems unless your computer is infected.
Use the restore point as acklan suggested, but if you roll back SP2 you have to find what is causing the problem and then reinstall it.
Start by updating and running your anti-virus program's scan.
Then download, install, update and run the following freeware aps:
Ad-Aware SE Personal - Click on Adaware SE Personal in “Products” on the left side of the pagehttp://www.lavasoft.com/
Spybot S&D: http://www.safer-networking.org/en/index.html
Be sure to enable “Teatimer” which gives you realtime protection.
Microsoft Windows Defender http://www.microsoft.com/athome/security/s...re/default.mspx
This also provides realtime protection.
Microsoft Malicious Software Removal Tool (Win XP and Win 2000):http://www.microsoft.com/security/malwareremove/default.mspx
A˛ - Free from http://www.majorgeeks.com/download4281.html
Run it, click Search for Updates, then click Scan.
Then run a few of these web based scans using Internet Explorer only:
Kaspersky Anti-Virus Web Scannerhttp://www.kaspersky.com/service?chapter=161739400#betatest
Panda Activescan http://www.pandasoftware.com/activescan/co...n_principal.htm
Trend Micro antivirus and malware scan:http://housecall-beta.trendmicro.com/en/st...orp.asp?id=scan
Trend Micro antivirus European Edition (supports Mozilla based browsers)http://uk.trendmicro-europe.com/consumer/h...call_launch.php
Etrust Anti-virus web scannerhttp://www3.ca.com/securityadvisor/virusinfo/scan.aspx
online trojan scans here - http://scan.sygatetech.com/pretrojanscan.html
Windows Security Trojanscanhttp://windowsecurity.com/trojanscan
See instructions for it here:http://www.windowsecurity.com/trojanscan/trojanscan.asp
If the above doesn't resolve the problem you should post a HJT log in our HJT forum.
Read the pinned post in our “HijackThis” forum, herehttp://www.bleepingcomputer.com/forums/t/34773/preparation-guide-for-use-before-using-malware-removal-tools-and-requesting-help/ Carefully read and follow all directions explicitly.
Following instructions run a log, and post it in following HJT forum, at this linkhttp://www.bleepingcomputer.com/forums/posthjtlog.htmlDo not as yet attempt to fix anything by yourself using Hijack This as even what may seem to be a small mistake can render your op system inoperable.
Some files when in one folder may be fine while in another may be malware.
A member of our HJT Team will analyze your log, make recommendations and offer assistance.
It may take a period of time to get a response to the log you posted because the members of our HJT Team are kept very busy. Please
be patient as this team is manned by volunteers. They will help you as soon as possible.NOTE
Once you have posted your HJT log, please DO NOT make any additional posts in the HJT forum thread you created until you get a response from a member of our HJT expert team.
The first criteria they have when looking for logs that need replies are posts showing 0 replies
. If you make an additional post, it will show as having 1 reply
A team member, looking to see if a reply has been made might well assume another HJT Team member is already assisting you and might not open the thread to respond.
So, make your post and wait for a response from a team member.