Have to keep reinstalling software

[Nelsie]

I have installed software. when i install it, it works fine. but if i have to shut down my laptop i get the following error when i try to use the program: windows cannot access the specfied device, path, or file. you may not have the appropriate permission to access the item.

its drivng me crazy.

it takes a long time to reinstall, and i don't know what is going on.

 

[raybay]

Sounds like a defective or worn out hard drive. Tell us more about your system, brand and model with components

 

[Nelsie]

It is a Toshiba Satellite L645D, AMD Processor, 3.00 GB 64-bit Operating System.

 

[raybay]

And the hard drive is?
And was built when?
And has had little use, or significant use?