Any beeps?
To test your RAM, I recommend
MemTest86+. Select
Download - Pre-Compiled package for Floppy (DOS - Win). Unzip the file to a convenient location, insert a
formatted floppy disk in the floppy drive, double-click on
install.bat to install. Then, with the floppy in the drive, reboot the computer. The computer should boot to the floppy and start testing your RAM. Let it run for several passes or even overnight. You should have
no reported errors. A CD version is available. An excellent how-to guide is available
here.