Need help diagnosing and fixing laptop
January 24, 2014 5:46 PM Subscribe
I have an HP G42 14" laptop that has been intermittently failing to boot or wake up from sleep. Well, I think that's the problem. It's hard to tell because all I get is a black screen. No error messages or anything.
posted by Shohn to Computers & Internet (5 answers total)
This problem started a few weeks ago. After a little casual googling of the problem, I kinda wrote it off as borked. Now that I'm looking for a replacement, I started trying to do a little more troubleshooting as a last ditch, and I'm getting some weird results.
When I first noticed the problem, the laptop failed to wake up from sleep. I heard the hard drive whirring, though, and the led light on the CAPS LOCK key was on and blinking. I turned it off and tried to start again, but no dice. There's no error message or anything, just a black screen and blinking lights. My initial research led me to believe that the motherboard was fried, possibly as a result of the battery being worn out. I can't remember where I found that explanation. I do know that I had been getting warning messages that the battery was not good anymore prior to the black screen event.
Today, I did a little more googling and ended up doing a hard reset (took the battery out, help the power button down for a minute, then trying to start up with just the AC cord plugged in- no battery). It did the same thing.
Then, I tried hooking it up to an external monitor, and it booted up just fine. This was with the cord plugged in and the battery in place. I let it boot up completely and sit there turned on for a while, then turned it off and tried to turn it on again. No dice. Black screen and blinking light. The light blinks once, which appears tp be an HP error code for a bad CPU.
I tried hooking it up to an external monitor again (this time one that I know doesn't work- I thought that maybe just having the cable in the VGA port would make a difference). Still a black screen, but this time the led on CAPS LOCK was solid on. I did another hard reset, then tried turning it on without the battery in place, and it came all the way on. No blinking light this time and everything appears to be working fine. I'm typing on it right now.
So. Any ideas on what might be going on? I kinda have an idea that maybe a new battery would help somehow.