[V]

ok, my desktop pc is all messed up.
it was working just fine 4 months ago when i left.
before i left, i unhooked all the wires, power keyboard mouse monitors etc. i just left the network cable plugged in. and that was still connected to the cable modem and router. the router and modem still work fine.
keep in mind i used to keep the comp on 24 hours a day for months straight, and now it had been off for 4 months, somethign its not used to.

the issue is the pc doesnt want to boot up. i got it started a few times but cant anymore. when i turn it on, you hear it power up and then it beeps every 3 seconds. the monitor doesnt even respond, it states "no signal". what could be wrong with the comp that it wont even get to that stage. when i did manage to get it to boot up, i used it for about 25 min, then it just blanked out, monitor went to no signal again and that was it. another time it blacked out then rebooted on its own, or actually attempted to and then went blank again. I dont believe its any type of virus.

if it isnt easily fixable, i plan on just buying another cheap pc since i dont need it to do much, just the web and some pictures occasionaly. It is an eMachince so nothing great to begin with. I was also wondering if i buy another eMachince, can i pull the hard drives from my current one and use them still so i can save all my data?

im not sure what to do about it... thank god i have my laptop