Green light comes on and the fan but monitor will not

If there is noise "beep" then it has RAM issue/RAM port. If is not noising then it has motherboard issue. I guess you need to take it to the technician and ask him to fix or replace it.

what tower? model, the monitor has nothing to do with power and dead fans in the tower.
'Sounds, (and silent to) means the PLUS in the PC is dead.
all things can be repaired, that is what technicians do.
here is the chain of events, ! to get noise (fans)
power in the wall 120vac , usa
power to the PSU,
the power button goes to the MOBO, and standby power is there
now and pushing said button the MOBO commands the PSU on
if the PSU is happy (PWROK) thinks PSU IS safe the PSU tells the PC its ok, and power stays up.
and fans run.

so my guess bad PSU, its easy to test with anyf $10 voltmeter,
ask.

tower PSU, 101

http://pcdied.com/power.html

have u tryd changing ram cards i had a computer do the same thing it worked for me

What you need to do is start up and go to the OS by pressing F10 or F12. And start up in safe mode.

gly..

Make sure the video plug is secured into the back of your tower also if you have another monitor you could try that to make sure your monitor hasnt gone bad.

if the green light is on then the computer is powered up, i suspect u have a defective monitor, not that uncommon, the olny way to check it is have a computer repair shop hook it up to another working system and see if the monitor turns on, if it is the monitor just replace it, monitors are very cheap right now, just bought a 19" for $89.00, mine did the same thing, green light nothing on screen.

Do you see the BIOS splash screen or anything?
Try booting into safe mode by pressing F* as soon as you power on the computer. If the monitor works, then it is a bad driver. Roll back to a previous restore point, boot to last known good coonfiguration. Last Known good configuration is available from the same as the safe mode screen.

If this is helpful, please comment and rate. Have any other questions, please let me know.

Oz

its not problem of fan. re-insert your ram. even if doesnt come then problem with ur motherboard chipset. if in blore call 9972888885

get yourself a themaltake ps

make sure you remove the old one and take it with you to the shop or get the shop to do it for you if you dont have the expertise yourself.


hope this helps

Try this troubleshooting guide it has worked for me in the past 99% of the time http://arstechnica.com/guides/tweaks/troubleshooting.ars