My friend gave me their old broken laptop they didn't need since they got a new one. When i turned it on it didn't post. I tried to replace the motherboard, connect it to HDMI and VGA, replace the RAM, rip out the CMOS battery, and short a bunch of random stuff. Even after that it still won't post and I don't know what else to try. The battery is dead but while plugged in the fans, hard drive, and disc drive still spin up so I don't think that that's why.