When I restart the PC, it appears that syatem boots properly; but when I try to log on, suddenly "No sigal message' appears and monitor goes blank. Some times, I am able to log on and after log on, when I click on any application, monitor again goes blank. I think the PC is still active during this as I had to force to power off to restart again. In safe mode, the monitor remains on for extended period and I have copied all the files from my C drive to D, just preparing for an ultimalte XP reload. I also did a complete virus scan in safe mode and monitor remained on during this period, I also ran 'Regisrty Mechanic' to clean up the registry. But same problem when I start windows in normal mode. This is happening for the last 3-4 days. I do not remember adding any new software or hardware. Today, finally I reinstalled the XP. During the entire process, the monitor was fine. Once after completion, when windows restarted and during logon process, again the monitor went blank. Could this be a graphics card related problem? Any help is greatly appreciated. I have XP SP3 running earlier when the problem started and now back to original CD with XP Home version ( 2005)
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