ePSA error code 2000-0151

Hello.

Recently my laptop has had a few issues. It all started when I finally created my McAffee account and let my subscription start. Then my computer slowed rapidly, then yesterday it had some real issues turning on. I spent most the day trying and about 5 hours running a boot kit start scan thing, which scanned my computer before it turned on. In which it found several corrupted files - then at about 6% complete (5 hours) it crashed.

I then followed to complete a start-up repair. Which sort of worked - I could log in again but it was still slow, internet browsers wouldn't work and the language for everything was changed to webdings - so I couldn't really do anything.

Then I logged onto a different computer and started researching it. And did an ePSA test and got

Error Code: 2000-0151

Validation: 110968

MSG: Hard Drive 0 - S/N TE95113RGYBUS Incorrect Status = 3E SMART predictable failure

Doing some more research I found I should re-run the test, check cables and connections, and reflash the latest BIOS.

I have a Dell Inspiron 14z 5423 laptop. So I can't really check cables and connections without opening it up. Voiding the warranty which lasts until October 2013. I have tried to restore factory settings, as although my files are important - they are pretty much all corrupted anyway so to plug in an external hard-drive would only infect that. I just want my laptop working again. Also I don't know what reflash the latest BIOS and a Google search didn't help.

More infomation:

I can no longer get the log in screen - it has the Dell logo loading, starting windows - a blue screen flashes for about 1/2 second then the whole starts again.

Does anyone know how I can fix this as quickly as possible.