My Mum's PC, running Windows 2000 Professional, won't boot. When you turn it on, it just beeps and doesn't even get to the very first booting screen.
I tried removing things one by one and it turns out it could be memory related. I removed it and re-inserted it and the PC booted correctly. However now there are problems whilst using Windows. Error messages come up relating to "explorer.exe" and it randomly crashes. Firefox also crashes.
All of these problems happened since I installed Firefox (it is Windows 2000). Surely this wouldn't have caused it would it? I installed it because the PC wouldn't print from Internet Explorer or Outlook Express so went to Firefox instead.
Can memory just stop working or go a bit funny? I noticed it doesn't check the memory upon boot-up now?
Is this all memory related and/or PSU related? I am thinking it is memory.