HPG72-250US Power Light Blinks, Caps Lock Light Stays On

So I have been having some problems with my computer, an HP G72-250US, that I bought a few years ago. Namely, the screen would get black and white lines on it and freeze: Here's a pic. What the screen looks like.
A friend of mine told me that it could be a problem with the fan, so I decided I would try to take it apart. After some success, I noticed the fan wasn't clogged or anything, so I put it back together. When I did, the power button only turns on for a half a second, then shuts off. It repeats this over and over again. I noticed that the Caps Lock light stays on. Doesn't blink, doesn't do anything.
I looked around online (using my wifes computer) and all I could find was the HP LED error codes, which mention the Caps Lock or Number Lock light blinking, but nothing about the Power Button Light. Could it be the same issue, a CPU failure?
Thanks for any help!
UPDATE:
So after watching my computer for a bit, the Caps Lock Light DOES do something. I hope I can say this correctly so everyone can understand it:
The Caps Lock Light is on, the Power Button Light is off. For the split second or two that the Power Button Light comes on, the Caps Lock Light goes out. The LAN connector also lights up when the Power Button Light is on. Everything is pointing to it blinking once, so I'm still thinking its a CPU problem. Any thoughts?

EduarddeKam wrote:
It is not a real problem in the sense that is does not hinder me in my computer use, but it is something strange.
When a turn the computer off, the caps lock light on my keyboard turns on, only to turn off after I strat my computer.
You might consider zapping your PRAM.

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Good Day
I currently have an HP G42-475dx which was purchased about a year and a half ago. This laptop has known to run fairly hot (around 80 degrees celcius).
I was using the laptop to play music, while the screen went blank. I took off the laptop.
1st - Upon putting on the laptop, the caps lock LED blinked twice (Indicates corrupted bios). I then went to power off, and leave it off for 10 minutes.
2nd - Upon leaving off for a while, the caps lock is now blinking 5 times upon powering on (General system board failure). I then proceeded to open up the laptop and remove the CMOS battery.
Upon removing the battery, and leaving the laptop off overnight.. The caps lock is now blinking once, (which indicates CPU not functional.)
I am unsure whether the motherboard has gone bad, or if its just the CPU itself. I need to get this laptop back and running for when i start school..
Any help would be appreciated.. Thanks!

SOMEGUY1771 wrote:
Good Day
I currently have an HP G42-475dx which was purchased about a year and a half ago. This laptop has known to run fairly hot (around 80 degrees celcius).
I was using the laptop to play music, while the screen went blank. I took off the laptop.
1st - Upon putting on the laptop, the caps lock LED blinked twice (Indicates corrupted bios). I then went to power off, and leave it off for 10 minutes.
2nd - Upon leaving off for a while, the caps lock is now blinking 5 times upon powering on (General system board failure). I then proceeded to open up the laptop and remove the CMOS battery.
Upon removing the battery, and leaving the laptop off overnight.. The caps lock is now blinking once, (which indicates CPU not functional.)
I am unsure whether the motherboard has gone bad, or if its just the CPU itself. I need to get this laptop back and running for when i start school..
Any help would be appreciated.. Thanks!
It's most likely the motherboard or a corrupt BIOS. CPUs rarely fail.

HPG72-250US Power Light Blinks, Caps Lock Light Stays On

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