I logged on to my computer today, I was on it for quite a while, doing everything as normal, there were no problems at all and there haven't been for ages. Then my computer suddenly froze so I restarted it.
When it came back on it was telling me I had a disk boot failure and to insert the system disk. I called my friend who had my disk, and he said he could come over with it. Turned the computer off, left it for about 20 minutes, then when I turned it back on it wasn't coming up with that error but there was some other problem that I don't remember, it was minor though. I turned it off and went out, then came back, turned it on and it worked. I've dealt with computers enough that I knew not to trust it, so I wasn't too hopeful. I was on it for a couple of hours, then I turned it off to do something.
I turned it back on and it said there was a problem with the shut down, and it asked me what options to choose. I chose "Start Windows Normally", but it went to the XP logo screen and then restarted. No matter what option I tried, it kept restarting.
I changed the boot mode to CD, and booted with my XP disk. I tried going into the Repair mode and using the chkdsk /r method, but it got to 50% and then stopped, saying something was unrecoverable. I tried FIXBOOT and it said the boot partition was corrupt and it created a new one. I restarted and it was still stuck in this endless loop of restarting.
I then pressed F8 and it brought up the advanced options screen or whatever it's called, and I selected "Disable automatic restart on system failure", that's when it brought up the UNMOUNTABLE_BOOT_VOLUME blue screen of death.
I've been trying to sort it for hours and I've had no luck yet. I've searched all over the internet and tried various methods, I've tried reseating the hardware, I've tried only plugging the monitor, keyboard and mouse in, I've tried everything I can personally think of.