is my laptop ruined and where can i send it in?

my sony vaio pcg-frv37 laptop pentuim 4 was overheating so i opened it up and dissconnected the fan system and air sprayed a ton of dust outta there

put it all back together

now i turn it on, power works, fan work, screen completely blank, no sound or nuthin

what possibly happened?

where can i send it for repairs and an estimate?

help me out if ya can

 

Are you sure you tighten all the screws properly?
Are you sure you didnt hit anything will blowing out air?
is the heatsink toughing the CPU and are the screws tightened?
Have you tried reseating the RAM?

 

Hmmm...sounds like RAM is not seated properly. How fart do you get in the POST sequence? Do you get anywhere?

 

all the screws are back into place the exact way i took em out

the power turns on fine

screen stays blank like it's off now

no sound comes either

power button works, fans are movin

press keyboard, no sounds either

how would i reset the ram????

 

To re-seat the ram, simply remove it and re-install it making sure you get it seated right, While you're in there make sure nothing came unplugged.

 

Is your screen blank when you turn it on, or does it stall when the Sony logo comes up?

If the screen is blank, then it might be a motherboard problem or you might disconnected a cable?

 

when i press the power button, the light on the button lights up and you can hear the machine turn on for a second, the fans start running

nothing at all comes from the screen

it stays exactly like it's turned off and theres also no startup sounds or anything from the speakers

nothing is unplugged from the motherboard either

i disconnected the cable from the screen to the motherboard and reconnected it

nothin changed

could that air spray have done somethin when the cold comes out of it???