I hope that you have the recovery CD. If so, simply got to run type sfc /scannow Note the space after SFC. Then with the CD in let sfc run and it will repair any corrupt files that it finds.
Other is to go to this link;
Desktop PC, Windows XP Home
The first and only problem came when I noticed the Monitor flickering and taskbar disappearing. So I sent the Monitor for repair (under warranty), they could not find the fault on Monitor, so sent the CPU. Few weeks later both units came back with details of the work they've done: Confirmed fault with Modem; emailed visual for Modem; fitted new Modem and tested dial up networking ok.
When I turned the PC on, I noticed the dial up speed went up to over 100Kbps, then my internet kept on dropping and some 'error on Modem' message on the screen. It's definitely nothing to do with my ISP.
Then I cannot even turn the PC off from the start button.
So, I sent the CPU back to the computer repair people.
Couple of weeks later, I got the unit back again and the description of work done : confirmed fault with Modem; emailed visual for Modem; Fitted New Modem And Tested Dial Up Networking OK.
The Problem with the Unit not shutting down is caused by Corrupted Windows, Windows would require Re Installing from Scratch. This would not be covered under Warranty. Windows Re Install $75., Data recovery if required $55., Internet set up if required $25. NOTE: The unit will shut off with Power switch if it is held in for the required 5 seconds.
I have'nt done re installing Windows before, I need to make research on how to do this, or a little help from the experts. I have no problem on data recovery and Internet set up.
But it just amazes me...how the first problem on Monitor ended up the Modem at fault, then unit unable to shut down due to corrupted Windows?!
Hope I am not getting ripped off.