Originally Posted by
peterb
any beep codes? If so what are they? If not, it is likely that the computer is failing to POST - so it isn't loading the BIOS code. If there are, what are they?
Shutting down the computer by powering off ios more likely to damage the filesystem in Windows, which it will generally repair itself. However if it had frozen, the sysetm had already failed, so the results are less predictable. Freezes like tghat are often indicative of memory failure (permanent or intermittent) but a beep code might (only moight) tell you that.
If it isn't getting to POST, then the next step is to remove all the comonents apart from the minimum (graphics - unless there is a default on board graphics adapter) and one stick of RAM and see if it boots to that.
However before getting to that stage, if you can remember what the key press is to get into the BIOS set up screen, try pressing taht combination. If that doesn't work, try clearing the CMOS (the BIOS configuration settings) as that will rteturn the bios to its default settings.
If that doesn't work, then start from scratch - but by that time things will be pretty serious and you might be looking at damaged components. The fact that the power switch is brhaving differently is an indication that the CMOS settings may (only may) be corrupt as that is a user configurable setting.