Ok, here's the story. First the short version. Often my computer doesn't boot. It hangs while the Windows logo displays. Only a hard reboot via on/off restarts it. If I boot again the same thing happens, however if I enter the BIOS and save it (without having made changes) the system boots fine, every time (so far).
How I discovered this trick is too long a story to go into. What is going on here?
The system does boot normally at times by the way, and I think reboots work all the time, although I'm not sure of that.
It's an Asus pc 4GB W7 64bit. However I had the same problem while running Vista and Win Server. It freezes completely, no warning beep or sign, no hard drive activity, no response to key presses or mouse. I've waited for 10 or more minutes just to see... nothing. Only a long press on the on/off button shuts it down. This has been going on for at least 6 months.
I'm pretty computer savvy (I do pc consulting), so I did a lot of testing, playing with device manager and attached devices. Several times I thought I'd found the culprit, a miscreant USB device or whatever, but not so, as the problem resurfaced eventually.
By the way, Windows does notice there was a problem booting as it suggests strongly that I run that useless fix it after a failed boot utility. That thing has never done anything but take huge amounts of time to end up saying "dunno, can't fix it." And so it did in this instance.
So, has anyone run across a similar problem or have ideas? I've tried searching on this, but it's pretty difficult to figure out how to hone a boot problem search down to this issue, so I've not been successful.