Start up freezes and stops starting up, and screen freezes on a blue/black scree

[blazingglory]

Hello,
why does my pc take so long to start up and then it doesnt always start up, and sometimes freezes on a blue/black screen?

thank you

 

[iceclock]

full specs?

 

[Brett928S2]

Hi

Run a hard drive test in DOS... HIRENS BOOT CD etc, it sounds like a failing hard drive...

All the best Brett