I am having problems with my PC (Windows XP) and have run all my scans etc to\ncheck for viruses and it has found nothing. (Ad-aware, Symantec,\nSpywareblaster also cleared out cookies and tif's, done PC disk clean up and\ndefragged).\n\nMy PC will start up but is then dead and I can't do anything. I can't even\nshut down - I have to switch it off manually (and even to do that I have to\npress and hold the button for about 10 seconds before it actually shuts\ndown!!). I have left this msg whilst in safe mode.\n\nWhen I try to update Windows in safe mode I get this 0x8007043C error code.\nHave read all the questions and answers on here and the reply is always the\nsame - you can't do it in safe mode.\n\nWhen that's the only way I can do anything at all with my PC, how else can I\nsort this problem pls???\n\nIf updating Windows won't help to sort out my PC, any other ideas other than\nsending it away to get it fixed??\n\nAll help greatly appreciated.