On continuously for 18 months or so, give or take a few thunderstorms, when was the last time you cleaned this PC?
Open up the case and look inside, you may be surprised, (and possibly horrified, )
Here's a video about PC cleaning to help you;
I hope that helps.
I have a Dell Inspirion 530S approx. 18 months old and I am running Windows 7 on it. The computer remains on at all times, except when storms are in the area. Recently the computer has decided we must restart it after non-use of around 6 hours or more.
In other words, in the morning when I hit the enter button to open the screen and then go to an icon such as Google Chrome, a note appears that it is not available. I go to restart, then everything is fine until the next extended time period of non-usage. Then the process starts over again. What can I do to correct this issue?