PC Boot Failure and monitor shutdown

  heathdavid 13:26 02 Jan 04

My problem is with an Athlon 1700 running Windows 98 second edition.
It now regularly (but not always) stops part way through booting up. It has gone a long way through the boot up sequence and seems to fail just before the normal screen with wallpaper appears. The monitor then reports no signal.
A single ctrl alt del will restart it.
I have done a virus scan and Norton Utilities scan and neither report problems.
Any ideas what this could be?

Select the startup menu by pressing F8 after the Hardware test. Choose Step 4 first, Step by step confirmation. If nothing obvious, try step 6.

Not step 6, Step 3 Safe Mode.

  heathdavid 09:17 03 Jan 04

Thanks. I tried that but it is when processing the registry that it fails. I have looked at the bootlog.txt but the last 2 lines just say processing unknown. When it does boot up, it is fine.
The last 3 times I booted up, I unplugged the USB devices first and it booted every time. I then plug them back in and everything still works. I don't know if that is just coincidence! I wondered if it was a power supply problem but the first USB hub has its own power supply.

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