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Windows keeps locking up

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Hi guys. I have abit of a bad situation at the moment. From this morning and from then on every time I start up my computer an "svchost.exe" error comes up about 2 or 3 minutes after it has booted up. The message says the "The instruction at "0x745f2780" referenced at "0x0000000000"". etc. Please help, once that message comes up the whole thing appears to lock up and I have to restart only to start the cycle again. The only thing I can think of that has happened is that I tryed to update windows last night, the option where you can get it to shut down after the update and this morning I woke up and it still hadn't turned off, it was stuck at a shutdown screen, so I restarted. Any help would be greatly appreaciated. Thank you!
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Retired Tech

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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 and 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

Click start then run, type chkdsk /f /r then press enter, type Y to confirm for next boot, press enter then reboot.

Windows will appear to load normally then either the monitor will show progress or the screen will go blank, do not disturb this.

This will take an hour or so before it gets to the desktop.

Download and install Tune Up 2006 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 and check it 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

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Click START...RUN...TYPE IN... services.msc ..At the very top highlight alerter by clicking on it you will see start click on that then close program

give that a try
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