System will not reboot

While using my imac this morning, the screen dimmed and I got a message that I needed to restart by holding down the on/off switch. After doing so, the system will not start. I Get a folder icon with a question mark. Do I have a hardware failure?

Hi:
Below is the support and driver page for your notebook.
It came with W7 Home Premium 64 bit.
http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?os=4063&lc=en&cc=us&dlc=en&sw_lang=&product=5051...
There appears to be recovery disks available for your notebook, but the link doesn't work which means you will need to call and order them.
Or you can do this...
If you can read the 25 character Microsoft windows 7 product key, you can download plain Windows 7 ISO files to burn to DVD's for the version of windows that came installed on your PC, and that is listed on the Microsoft COA sticker on your PC's case.
Burn the ISO using the Burn ISO option on your DVD burning program and burn at the slowest possible speed your program will allow. This will create a bootable DVD.
Use the 25 character product key on the PC to activate the installation.
The key will activate either a 32 or 64 bit installation.
Then go to the PC's support and driver page to install the drivers you need.
Link to the W7 ISO file downloads is below.
http://www.mydigitallife.info/official-windows-7-sp1-iso-from-digital-river/
You had a 500 GB 5,400 RPM had drive.
So, you can get another 500 GB hard drive (and you have to if you want to buy the recovery disks).
You can opt for a 7,200 RPM drive, which will give you better performance, but your battery life will be reduced between charges.  Or you can get another 5,400 RPM one.
My recommendations are posted below.
7,200 RPM:
http://www.newegg.com/Product/Product.aspx?Item=N82E16822136856
5,400 RPM:
http://www.newegg.com/Product/Product.aspx?Item=N82E16822136567
Paul

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