laptop wont boot up, no beep codes or caps lock and num lock codes.

[khutche]

Hey everybody
I have an HP pavillion dv7-3100 and i just disassembled it to clean the fan and install a new internal clock battery. after re-assembly the screen wouldnt boot up and the caps and num lock would blink 3 times. so i fixed the memory issue (or so i think) and it does the exact same thing as before (black screen, fan on, power and speaker buttons on, and mouse pad light on) except this time, I am getting no blinks from either the num or caps lock and no beep codes.

Could somebody please help me figure out this problem?
Thanks for any help you can give

 

[Laptop_Nerd]

Hi,

Please do try these troubleshooting steps that may help.
- First is to do a hard reboot, remove the battery and unplug the AC adapter then press and hold the power button for 20 seconds then try booting it up again.
- If it will not work do another reseat of the RAM's, remove them all for couple of seconds then put them back in making sure everything is seated properly.
- If these will not work as well, do try a different AC adapter that has the same voltage and see if the same problem will persist or not.
- If all these will not work I would suggest opening the laptop again and make sure everything is seated properly specially the ribbon cables.