Need help on startup slowdown

My Gateway ML3109 normally runs lean and clean with only Office 2003 and no
startup programs listed in Defender Explorer. Recently it has begun to slow
down signifcantly on startup.

I found errors logging in the Diagnostic-Performance>Operational Event Log,
usually with a Critical 100 Event about startup degradation, accompanied by
multiple Errors about indiviual apps/drivers taking longer to complete
resulting in performance degradation in system start-up process. Most recent
are Event 105 "Foreground optimizations (prefetching) took longer to
complete, resulting in a performance degradation in the system start up
process," Events 102 "This driver took longer to initialize, resulting in a
performance degradation in the system start up process": HdAudAddService,
PptpMinport, Ndistapi, NdisWan, AgereSoftModem; Events 101 "This application
took longer than ususal to start up...": LogonUIxe, mmc.exe, svchost.exe,
etc. Each time it seems to be different services, drivers and applications
which are delayed and they individually troubleshoot ok.

I was advised by Gateway to do a clean reinstall which I have done twice
with no change in the situtation, leading me to believe it might be a setting
in the Boot or BIOS which is incorrect. It is the same with or without my
Avast antivirus. Any help would be much appreciated because this is ruining
what was once a fast notebook.

Use the system configuration utility to do a clean/diagnostic boot, help for this is available within the utility. this may help in finding startup problems.