It happened after I loaded up a filter application called Safe Eyes. At the end of the installation process an error message came up: it mentioned a 'fatal error' and something to do with a filter application (another application? Avast and Adaware are also on my computer), and being unable to load some dll file. I ignored it like a idiot and hit reboot. It has been stuck ever since at the Please wait screen for vista. It automatically tries to reboot itself but its still stuck and useless.
I need my computer for my home business so - if poss - would appreciate some help today. Tech support doesn't open for Safe Eyes in another 5 hours as I'm in the UK and I'll need to see 2 clients by then. Any help would be appreciated.