Unfortunately i need to update this thread since the problem has recently returned. Since i last posted on this topic i have upgraded the machine to windows 7 and for a long time afterwards it worked fine without the problem reoccuring. To recap the machine startis making a clicking or stuttering sound, iam certain through the speakers/sound card not from the hard drive or other components directly. At the same time it 'freezes up' and needs turing off by the power switch regardless of what it was doing before the problem starts up. On restarting it gives the usual options to run normallly or go into safe mode (which can help but does not aid determining the problem). Rebooting normaly seems to cure the problem for a while and it can be days, hours or minutes before the proble occurs again. But it does occur.
I am begining to wonder if the problem is some thing software related and i have found that cleaning out the internet cookies can temporarily cure the problem. I am thinking that it could be a 'bad' cookie that is if not causing the problem but at least triggering it. it would have to be one that regularly comes onto the PC though. Other theories are conflicts caused by windows updates or some form or virus. I have an up to date subscription to Norton internet security (2010 version i think), which should stop any viral problems, however i have noticed on another Win7 machine running Norton 360 much more in the way of attacks being detected and fixed. I am concerned that for some reason Norton IS is missing something that is harming the laptop PC. Would upgrading the laptop to norton 360 help? Not sure.
When i last had this problem i found i had to completly reset the laptop back to factory settings, something i will do if it is needed but not happy about doing, particulaly if it is still likely the problem will arise again in the future. I am also concerned than since the machine was bought with Vista and later upgraded that this will cause problems resetting it.
This is a real headache for me. The machine is primarily my father's and he enjoys using it to watch films on the internet. I do not want to stop him doing this, particularly as he is about to retire from work. However i do wonder if this activity might be harming the machine in the first place. Some of the sites used to access the films do not seem particularly 'clean' of potential virus infections. I know antivirus software should stop it but it is still a worry.
Can anyone help please.