This one's a beauty. This website will let you check just about anything you can think of.
Here's the link - refdesk.com
File that one away for future reference.
Checked for links and relevance, April 2014 - still an absolute cracker of a site. What a lot of work !
This is my site for links to Genuine Free Stuff as well as some useful advice. I use most of these programs regularly. It's good gear. It's all worth having.
** April 2014. Major revamp and update for relevance happening, especially now that support for Windows XP has ended, and now that we all are addicted to our Android phones. A lot of old stuff is going.
This post in particular started this whole website...
I have been building and using computers since about the Ice Age, from DOS 3 through to Windows 7.
I have been mucking about with mobile phones for quite some time, using Symbian S60 and then Android.
Press F8 at boot to start in safe mode - Windows XP and 7
To see the details of you computer, download, install and run 'Speccy' - shows Operating System, Firewall, Anti-virus and hardware.
If you think you have a virus, start here 'Free Online Virus Scan'. Try any or all, and be patient.