High fan speed
Had a bit of a search and couldn't find anything closely related to my issue
After 5 years of normal runnng, my PC has suddenly been running the cooling fan at high speed from startup, with occasional spooling up/down for no apparent reason. Everything else seems to function normally/well
Took the side off the machine and had a gentle hoover round inside.....although there wasn't anything obviously clogged up with dust.....is there a thermostat somewhere governing fan speed? and where would I find it? Can it be replaced if needed?