computer won't start

after installing and removing two sticks of ram, my computer refuses to turn on. when i press the power button, a fan revs loudly, then it makes a BEEP BEEP BEEP noise repeatedly until turned off. the computer monitor remains black, and does not show a BIOS screen or the Windows screen. i unplugged the hard drive in the process of installing the two sticks of ram to create room, but i believe it is plugged in correctly. does anyone know what i can do to fix this?

i took the ram i added back out, and it still doesn't work. i know the 2 sticks in there are good because the computer has run with them for as long as i've had it.

and how would i find out what kind of motherboard i have?

and how would i find out what kind of motherboard i have?

CheddaBumpz

Try one stick at a time in different slots, make sure it's well placed in the slot... or just put back the old ram and see if it's booting ok.

Try taking the CR2032 battery out of the motherboard and then turn your PC on. This should reset the BIOS to factory defaults.

Check if you bumped the old ram out of its slot. An improperly inserted memory stick will not allow the computer to boot.

again people there is nothing but the old ram in the computerCheddaBumpz

Well if your old ram is not working, you did something else to it... if your just not pushing your ram hard enough in the slot... it need to be clip in.

Here's an idea, give us detail about your mobo and old/new ram... and then we can go from here.

As a previous poster noted, consult your motherboard manual to lookup the code for the 3 beeps. If you are unsure which mobo you have you will need to open the PC and lookup the model number. It should be printed somewhere on the circuit board. When in doubt, contact your computer manufacturer.

Also, the motherboard should have a jumper to reset the bios to best factory values.