Issue:
Machine boots at normal speed, but slows down and grinds to a halt within about half an hour.
Observations:
First occurred this morning (about twelve hours ago)
It hasn't had a physical impact in the last couple of days, nor has anything new been installed (confirmed from the 'Installed On' columns in Installed Updates & Programs and Features)
Windows Event Log shows some HP services timing out and giving up
Normal windows processes are strangling the processor by CPU time and %
Nothing is consuming much RAM
Disk IO is minimal
Already Checked:
Malwarebytes (AV): nothing found
AdwCleaner (AV): nothing terminal
AVG Free (AV): nothing terminal
chkdsk (HDD): no errors
Windows Memory Diagnostic Tool (RAM): no errors
Googled and trawled SuperUser's uptime-associated performance questions.
Specs:
OS: Win 7 Starter (6.1) 32bit SP1
Device: HP Mini 110-3500
Processor: Intel Atom N550
RAM: 2GB