Internal hard disk drive not found after battery discharge

This is a Dell Latitude laptop with Windows XP
I let the battery die on it and when i plugged it in the next morning to turn it on I get that error message. I tried taking out the hard drive and putting it back in. The BIOS is not seeing any hard drive. It reads "<none>"
I am not sure if the battery discharging has anything to do with it or not.

Any help would be appreciated.
Thanks!
 
Faulty HDD Controller but I would have that laptop check out if you can. Most likely it's the MOBO that is to blame. MOBO = Motherboard. See if that was XP not seeing the HDD then you could re-install XP. But you said your BIOS is not seeing the HDD. It could also be your HDD as failed. Normally DELL has a tool that you run to test your system out. This tool is use by DELL Certified Techs to see where your issue is. HDD, MOBO, Battery. Most of the time the MOBO is replaced. Then HDD then the Battery to solve your issue.
 
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