tried to install modem on a friends second hand computer. while the top was off i decided to remove the password in bios by the jumper on the mobo. now the comp justs sit there, monitor flashing a led, does the bios need flashing? and whats the quickest plane to south america :(
Does the PC run the POST - sounds to me as if it does not, in which case you may well have blown the mobo when you removed the battery. But first, check all the connections to the mobo. DOes the HD spin. Does anything light up on the fron of the box? Open the box and see if any of the fans are spinning (you could have simply got a blown PSU). Some mobos have a fuse - check the manual.
Menawhile - I suppose you could also check that your passports up-to-date!!!!