Inspiron 1750 issues

Hi

I have a problem with my laptop.

The power light by the headphone port flashes white then four orange.

I did a diagnostic and there was an error scanning the hard drive and the optical drive.

Its very odd as its been fine all day, then when I was watching something online I noticed it flashing so immediately did a diagnostic check.

The error codes for the diagnostics is as follows:

0f00 065d disk self test error

0f00 133c no suitable disk media

4400 011a SCSI_0-000_disk_generic_multi-card-target-not-ready

Also when I take the power lead out the whole computer switches off. I have noticed that its not charging the battery. The adapter is new, and is the correct one, but it keeps coming up its not recognised.

When I typed the error codes in it suggests there is something wrong with the hard drive and it assumes that you can't boot up or anything. But I am able to use the computer fine. Its just the flashing light that concerns me.

Can anyone help

Thanks