Boot issues

This has happened twice now in the last 2 weeks. Computer tries to
boot and get XMS driver errors. Also himem.sys and emm386 not
loading. Sometime I can get to a blank windows desktop but am
usually
stuck in DOS. If I do get to the windows desktop, there is a
message
about no mouse found. In all of the failed boots, there is no mouse
or keyboard loaded in DOS or windows so I cannot do anything but push
the reset button. After probably close to 10 restarts, it boots up
and runs like nothing was ever wrong. A boot disk does not help. I
am virus and spyware/malware free. This computer is 5 years old and
built by myself, but
the hard drive is newer. Any help appreciated.

On Wed, 21 Nov 2007 10:48:35 -0800, lb thoughfully wrote:

> This has happened twice now in the last 2 weeks. Computer tries to boot
> and get XMS driver errors. Also himem.sys and emm386 not loading.
> Sometime I can get to a blank windows desktop but am usually
> stuck in DOS. If I do get to the windows desktop, there is a message
> about no mouse found. In all of the failed boots, there is no mouse or
> keyboard loaded in DOS or windows so I cannot do anything but push the
> reset button. After probably close to 10 restarts, it boots up and runs
> like nothing was ever wrong. A boot disk does not help. I am virus and
> spyware/malware free. This computer is 5 years old and built by myself,
> but
> the hard drive is newer. Any help appreciated.

Check the usuals, memory with memtest86, try another PSU, check for cpu
or gpu excessive heat, and check the CMOS battery.