This is just a Note, For those posting a Thread for Help. The helpers on the Forum are giving there time Free Gratis, From knowledge accumulated over years of working with Computer and Book reading. But no matter how we try, we do not always get it right. Do not forget the Computer is on your desk not ours, this makes it all the more frustrating with trying to help you, so if you can give as much detail as you can, and please to not say that this is OK like if you get lights on a computer and fans and drives work. This does not mean that the PSU is OK. Please try suggestions that are offered, and do not take things for granted.
We want to Help, but please listen when we speak. If you have a Problem Do not try to answer it your self after posting a thread. As above we are not perfect by any means so be patient.
And Please make the thread post clear on what your problem is
Just to add to woodchip's valid plea please please also , if your problem is resolved, post a brief note on which suggestion cured your particular problem as this could aid others with a similar problem.
And in the details you give of your problem, the specification we usually need are, speed of processor, how much memory you have and operating system ie Windows XP, Windows 98 etc. And depending on the problem whether you have onboard graphics or what graphics card you have and the antivirus software you use.