To start with my internet connection went dead so I tried to update the software which didn't work. When trying to dial through the modem (56K) I cant even get the INITIAL beeps. It makes no sound whatsoever. Its a standard INTEL 536EP V.92. I then tried a new modem but the PC doesn't even find it as new hardware. I tried it in a different PCI slot and nothing. I tried another modem and still nothing. I have no idea what is wrong with my PC. Can anyone help?

PC is :
AMD Athlon 1900+
1.60Ghz
256 MB RAM

Op system : Windows XP ProWhich operating system are you USING?

FlameOops, meant to add, operating system is Windows XP Pro.
have you made any changes to your system recently? Have you tried running a System restoration? Have you tried updating drivers for the modem by going to the modem manufacturer's website (YES, I know you can't get on the internet, but just use another computer and TRANSFER the install file).

FlameNot made any major changes and not used the system restore. I still aould have thought adding another modem and booting the computer up it would have found new hardware. Evidently not.How long ago did this happen? System Restore might be a good idea.

FlameAny lightning strikes, power surges or anything that could have damaged the motherboard? Did you try to manually load the drivers in Add and Remove Hardware?