problem

[scolli23]

I have a compaq presario cq61
I have disassembled it to clean the fan
now only white screen
and keyboard leds are flashing
in sequences of three.
(this seems to be ram error)
I have tried everything
assemble and disassemble 3 times
nothing
remove and put ram
remove bios battery
and more things
but nothing
there is no access to bios
just start and white screen
with tapping leds flashing 3 times
power on (white color) and wireles button (red color)

before if it worked

any ideas?

you have any processor grease?  maybe it became dislodged.