Notebook failing on reboot with all operating system

[Reaper1242]

Hi,
I'm at a loss here. I recently got given old Acer D525 running Windows 7 32 bit that I was hoping to use as a small backup computer. It was running fine until it started slowing down drastically. I'm talking 5+ minutes of waiting after clicking anything. Eventually it failed on boot and went into startup repair which also failed to sort anything out. Since there was nothing important on it I just did a factory restore.

It worked fine until I rebooted, then back to startup repair which again failed due to corrupt registry. I then installed a fresh copy of Windows 7 64 bit and again it ran fine until rebooting and the same thing happened. As an experiment I installed the latest Ubuntu and again it ran fine and failed to boot up with file system errors. I reinstalled Ubuntu and same thing.

I then ran Hiren's boot disc and did ever test I could think of. Everything passed no problem.

I can't figure out why a seemingly healthy system would fail when booting on different OS's.
Any ideas?

[Zarathustra]

I would run some diagnostics on the hard drive or replace it. Sounds like it may the cause of your problems.

[Reaper1242]

I think you're right.
I just ran another hard drive test from Hiren's. Looks like some bad blocks.
Mystery solved.