Turbodog, Based on your description of the model, this is what I think you have: http://wwss1pro.compaq.com/support/reference_library/viewreferencelibrar y.asp?countrycode=1000&catid=763&famid=2033&prodid=2220|Presario%20700xx If that is not your model then go to the support home and look it up. I think you can enter a serial number to insure you are getting the correct model. The page above has links to quick reference guides and maintenance manuals. You should be able to look up how to remove the hard drive and re-seat it. Also see if you can find how to enter the BIOS and see if you have an auto detect option. You may have just lost the BIOS settings. How old is this laptop? Be careful about how much you do on your own, you may still have a warranty on it. The same link above will lead you to how to contact tech support. You might want to call them to see if they can help you out with this. Spider Largo, Florida 33771 http://web.tampabay.rr.com/spider1 -----Original Message----- From: 24hoursupport-bounce@xxxxxxxxxxxxx [mailto:24hoursupport-bounce@xxxxxxxxxxxxx] On Behalf Of turbodog Sent: Wednesday, May 08, 2002 12:23 PM To: 24hoursupport@xxxxxxxxxxxxx Subject: [24hoursupport] hard drive not detected Hello, i have a little problem i was hoping someone here could help me with. Compaq 705US laptop computer 20gb hard drive 256 mb ram 1000Mhz AMD athlon 4 win xp home This is my father`s computer. He restarted it, and when it came back on, there was an error message. "operating system not found" after trying to start from a boot disk, and even trying to reinstall the operating system, i came to notice that the hard drive is not being recognised. I tried to open the case to see if maybe the hard drive cable had come loose (I`ve never worked on laptops before, only desktop computers) but after removing all of the visible screws on the bottom, the case would not open. I did not want to try to force it, so i decided to come here to ask people with more experience what i should do, and what you think the problem may be. I sure would appreciate any help. Thank you very much - Users can unsubscribe from this list by sending email to 24hoursupport-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field OR by logging into the Web interface at http://web.tampabay.rr.com/spider1/24hrsupport.htm. - Users can unsubscribe from this list by sending email to 24hoursupport-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field OR by logging into the Web interface at http://web.tampabay.rr.com/spider1/24hrsupport.htm.