A client brought their desktop in with the complaint that it was running very slow and kept crashing so the sick desktop computer was booked in for our of our Best Value Computer Health Checks
After we had cleaned the system up, removed all the viruses, sorted out the Registry etc etc, we turned our attention to the crashing.
Quite simply, the carpet fluff has accumulated over the years and was blocking the front air intake vents rather effectively
Air flow for cooling is vital for a computer to operate normally