Solved HDD max's out with minimal task, constantly.

Can somebody help me by explaining why according to Task manager when I open any program or file my hard disk usage jumps to 99% almost immediately and remains there for up to a minute, only when the level drops to around 30 to 25% does said program finally launch and I can continue working. The laptop is barely 18 months old I am using W8.1, with a Core i5 cpu I have 600GB of a 750GB HDD free, system memory is 4GB. It is very disruptive and any help would be appreciated.

See this MS article: Perform a clean startup to determine whether background programs are interfering with your game or program

HD Usage %100

Thank you for your input, might well be what is needed.

I hope so. Let us know how you make out please.