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Laptop Extremely Slow... CPU Usage Always at 100%

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My laptop is extremely slow lately. The CPU usuage is always at 100% and there is always about 50 processes running. I"m also running into problems where sometimes I will be on the internet (Firefox) and all of a sudden I get this pop up that says "Do you want to Send an error report" then it completely shuts down Firefox. It is an older laptop but I has never been this slow, I only have 448 MB of Ram. I have also done virus scans and it says there is not viruses, however I also did spyware scans and I did have spyware but I removed it. I was hoping someone might be able to help me out. Thanks in advance.
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Unfortunately, modern spyware is being designed with hidden files that are very difficult to find and remove. Often, even though a particular scanner reports finding and removing it, the hidden file restores it later. I strongly suggest that you follow the procedures outlined here: http://www.geekstogo...-Log-t2852.html And then post a HiJackThis log here: http://www.geekstogo...o-Here-f37.html You will be assisted by a trained malware removal specialist. Once you have been assured that your system is clean, if problems remain, post back here and we will help your sort them out. Good luck, and happy hunting!
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Items in blue which are underlined are clickable to give more information about the process

Click start then run, type prefetch then press enter, click edit then select all, right click any file then click delete, confirm delete

Click start, all programmes, accessories, system tools to run disc clean up, then from system tools, run disc defragmenter.

Click start then run, type sfc /scannow then press enter, you need the XP CD

Windows File Protection will show a blue onscreen progress bar, when the bar goes, reboot

If you do not have an XP CD you can borrow a same version as was originally installed XP CD, if you downloaded SP2 then you need an SP1 XP CD

Download and install Tune Up 2007 Trial

Run Tune Up Disc Clean Up

Run Tune Up Registry Clean Up

Click Optimize and Improve to run Reg Defrag, which will take a few minutes and need a reboot. You should disable the antivirus programme to run this

Check the anti virus is running after the reboot

After the reboot, click optimize then system optimizer to optimize the computer, select computer with an internet connection from the drop down menu, this also requires a reboot

After the reboot, click optimize then system optimizer to accelerate downloads, select the speed just above your actual connection speed, this requires a reboot

After the reboot, click optimize then system optimizer to run system advisor

If there is no improvement

Please follow the procedures outlined here: Malware Removal Guide

You will need a PC which can connect to the internet

Run all the programmes as advised then post a current Hijack This Log in a new topic in the Malware Forum

For the purpose of accurate malware analysis, Hijack This Logs are only dealt with in the Malware Forum. Posting them anywhere else will result in a delayed response

If you are unable to run any of the programmes, please ask for advice in the Malware Forum
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